Same here. It's easier to me..
As for Marriage, I think it works... But it's not easy. I mean, my Wife has almost left me a few times... simply because she thought that I would be happier without her (crazy idea, I know, but it's her insecurities at work).
The bottom line is to make sure you are happy with how your life is. It really doesn't matter what a legal document says about your "status", in life we all choose our friends and lovers... we choose whether or not to stay with them... and that's always been the way it is. A certificate that states that you are "together" really doesn't mean anything alone, it's the emotional and sometimes religious aspects that we imbue them with.
We do it because it's part of our culture... plain and simple. People get married because it's been happening for countless years down our bloodlines, it's just as expected as going to school or wearing clothing, it's a cultural thing.... The interesting thing about our modern society is that people now choose what culture they want to follow, they choose to be religious or not...to marry or not... to have children or not. It's our fundamental human right to be free to choose, and it's nice to see society more relaxed about those who go against the grain.