I think I know what you mean. Before I had a child, I had a pretty detached perspective on life. Yes I loved my wife and family, but I felt that if I lost all that (yes I'd be devastated), I'd still survive. But there's something about having a child that changes you. It's like you've lived your whole life as part of a show all about you. As soon as you have a kid you become a supporting character for your own show. It's not really about my happiness or his happiness, it's kind of more primal than that. Until you've woken up in the middle of the night sobbing with despair because you've dreamt that you've lost him, you're not going to understand. I don't mean to be elitist (you'll never understand until you have a kid) like a lot of parents are, but I'm just saying that it's kind of hard to explain until you know that perspective.