Some people are and some are not often depending on the circumstances, e.g. the people around them. Some of us are rather secretive about their enthusiasm for LBT when dealing with people around them. Others could give up that secrecy without having to fear any real problems with other people. I never concealed my LBT enthusiasm from my family (I couldn't, even if I meant to) and ceased doing so at school. I don't try to enforce my enthusiasm on other or run around with a sign proclaiming my enthusiasm for LBT, but anyone who wants to know will know about it.
People don't consider it "normal" and it probably isn't, but is that a bad thing? If you ask anyone to define the term "normal" to you, they will realize it is not quite that easy. Who is to define the term "normal"? The majority of society? In a society as heterogenous as ours and with so many different points of view and backgrounds this would leave just a very, very few things everyone would agree to be normal. Many people have some interests, hobbies etc. that many would label as "not normal", and so long it doesn't hurt anyone I think this is a good thing. It would be a horribly uniform and boring society if nobody did or thought anything labeled as "not normal".
Sometimes it may be better to let people know about the own enthusiasm for LBT than to conceal it, but that depends on the people around you of course. There are some who have so little to do with their own lives that they will try to make life hell for everyone who doesn't fit into their sheme of normalty. Many however will be bored of that if people just stand for their opinions and interests and don't let themselves be intimidated. We are bound to get strange looks when revealing our LBT enthusiasm to others (provided that we are no longer of the age where LBT enthusiasm is thought to be normal; an age hardly anyone around here still is) but many people are more ready to grow accustomed to it than we expect them to be.
