It is a question that cannot be answered with a simple yes or no.
I think that this depends very much on the individual. To some people religion is an absolutely integral part of their lives, to some it is part of their lives but not as important as it is to others, and some people discard religion altogether.
I think that true religious faith is not really a matter of choice. Some people will state their believe or even try to convince others of it but more because it is what most people around them are saying or teaching them rather than because of very deep personal conviction. The same can work around the other way of course with people stating that they don't believe because they don't think much about it.
In human history religion has of course been a crucial factor for both good and bad.
I have way too much respect for the comfort that individuals can find in religion to just discard it as nonsense the way some people do. Perhaps even the most frequent question on whether there is a god, or several gods, or no deity whatsoever is not as important as it seems so long people can find comfort or encouragement in religion. But this of course is entirely about the personal and private faith of the individual.
Sadly there is also the dark side of believing and not believing in the form of forcing either down the throat of everyone else. Religion has been terribly abused in order to keep large majorities quiet about the injustices these majorities have suffered from minorities (so while I couldn't sign it in every context and for every person I sure do see where Marx was coming from when he called religion "Opium for the people"). Religion has been even more terribly abused by people who insisted that their own faith was the only one and that others had to die unless they had the same faith about what was going to happen after death (no logic in that at all). It doesn't matter at all if people shout "Deus vult!" or "Allahu akbar!" or whatever else when killing or torturing others on behalf of their faith or whatever they may shout when killing or torturing people unless they state that there was no god (a relatively recent development but one that has also left a horrible trail of blood already).
I think that this insistence of the own faith being the only path to paradise is at the core of all the religion based suffering (whether we are talking of the worst form of people being slaughtered for their faith or lack of such or whether we are talking about the not quite so terrible form of religious suffering (but also one that can ultimately lead to bad ends) of humans being forced to attend religious services against their will or convictions by their parents, clerics or other authorities).
I do not know if there is a god or not.
I do not think that we should make our striving for leading a good life so dependent on whether or not there is a god.
If tomorrow I knew with absolute certainty that there was no god or after life I would not draw the consequence of leading a bad life against my fellow humans ever after.
Although I do not know if there is a god or not I pray sometimes. But I do not pray to be "on the save side" but because I am aware that there is so much for me to be grateful about that it is not the decisive question whether or not there is a deity, or several deities, or no deity at all to whom my gratitude would go. I would be grateful either way. Prayers can also be prayers of hope for something to happen on the own behalf or the behalf of others of course. But even in case there was no deity to decide about these prayers they are still helping to become aware of what one is striving and hoping for in life. There is no wrong in that either way.
Now if indeed there is a god, or several, or an afterlife I never understand why people think that there must be but one single very narrow way to salvation rather than several. Is a human automatically more qualified for paradise by being a Catholic, a Protestant, a Shiite, a Sunni, a Jew, an Orthodox, a Buddhist, a Hindu, a Taoist, a follower of the teachings of Confucius, or a follower of any of the hundreds and thousands of other religions or subbranches of religions, or non-religious ways to lead ones life in an integer way? I don't think so.
I have brought up the image before, but I can do so again. If there is a paradise I can imagine it like an island in a river with humans crossing the river over one out of many bridges, on boats, or rafts, or swimming, or walking over the water, or crossing the river in many other ways. All the ways lead to the same island. But unfortunately many people feel that everybody must cross the river on their own route. Perhaps it is out of an extreme concern for the other humans that fails to see that they are just fine on the bridges, or vessels, or ways they take. Perhaps it is also because some humans are scared that if there are other ways to the same destination there might be something wrong with their own way. So some of them try to get everyone to use the own way. They will go so far as to try to bring down the bridges of others, or sink their vessels, or drown them rather than see them go their way on a route different from the own. These people so focused on getting others to take the same way as them and stopping others from taking a different route may end up so hooked up in this that they fail to ever go their own way to the end and reach that island of salvation.
I don't know if there is a god, but I find it very hard to imagine that if there is a god this god would condemn everyone unless he or she walks on a path very narrowly fenced of by one particular religious scripture. I think that if there is a deity grand enough to create this whole universe in which humans are but one out of million species on one out of innumerable planets, within one out of innumerable galaxies... I cannot imagine such a deity to be so narrow minded as to accept only a very narrow selection, of a selection, within a selection, inside a selection of people based on a single religious code rather than a life that seeks to maintain all this marvelous evolving creation.
I don't know if there is a god, but if there is I don't think that god is well represented by any people who can't life with the idea of others living a life in a way different from their own.
Thank you for the question Amy
