That's a very interesting question. Hmmm... Well, if I've never ever seen The Land Before Time, I'd be missing out on a wonderful cartoon with beautiful soundtrack, amazing story and great characters. I wouldn't be writing this reply on this forum right now, my life would probably be a lot more different than what it is now as this cartoon was a truly influential part of my childhood.
First of all, it got me interested in dinosaurs. Also, one thing's for sure, I probably wouldn't have started to learn to draw and create art, as I wouldn't have read the amazing fictions written by awesome people in this great community, which undoubtedly inspired me to get into art. So, what'd my overall life be like? A lot more boring for sure.