It's PC, not facebook. I don't have any over personal information about me on here that I would feel uncomfortable with people knowing. If this was facebook, of course I'd rather know the person before I added them.
However, I understand people have their reasons, but....it just seems so pompous to not add someone on here. It's not like they suddenly have access to your whole life, just your profile. Plus, OH MY GOSH! HEAVEN FORBID SOMEONE TRIES TO MAKE PLEASANT CONVERSATION WITH YOU!!!! I just don't get it, not on here at least.
I know, I know, I'll probably get some hate for that but it's how I feel. If it's "just a number on your profile that has no significance" like people say, then why not accept a nice request?