Its a 50/50 thing. Some people don't change from these events. Some people give their children up for adoption because they refuse to change in their own life, to raise a child and alter whats always been fun for them.
Therefore, they don't change what they've always done, because a child came into the picture. They get rid of the child, and continue living their exact same lives.
However, in other cases, obviously yes marriage and children change everything. Its an argument that can go either way, depending on how you wish to look at it. Becca and Yourself wish to look at it as if ending up in a relationship for someone be it for an hour or years, that it'll warp and change your life forever. Which in some cases could be true.
On the other end, Wes and Brian are arguing that they aren't changing for anyone. They remain who they are and do all the same things they love to do before entering any type of relationship. The only thing thats changed is having sex with the person, or entering into the agreement that they're no longer "single."
Personally: I agree that entering into most relationships alters and changes your life forever. However I'm not discontinuing the fact that some people simply refuse to accept change and they'll give up a child if it means living their life the same way as it was before. Therefore you can't argue that its changed anything, when to some, it doesn't.
Inspired by Cola? I've got more inspiration out of waiting paint dry. 
Which still confuses me. Anyways, I was meaning that nothing you do is inspirational, in a good way, and he might as well send her out into the world with a pack of condoms.. because it'd be about the equal to assuming anything you do could be good.
What the hell are you on?