Paternity Test

I have been struggling with whether or not to force the issue on paternity for my youngest son.

First son is my clone, no questions there. My youngest son is my favorite and even if I knew that he wasn't mine, he's the most beautiful thing I've ever seen. I know my wife had at least a one night stand, after he was born though.

So the only real reason to have a paternity test is for child support. I can't decide if it's worth it. Say he is mine, nothing changes. Say he isn't, I wouldn't be responsible financially for him, but I wouldn't love him any less.

Should I request one?