This happened to me and I just wonder why.
People on Facebook friend request other people just for the hell of it. They don't care who they are, just so long as they can put a face to the name, they friend request everyone they've ever met. A bunch of my friends have hundreds of "friends" yet only communicate in real life to a mere fraction of them. The others are there just because they're there.
I know exactly how you feel, I just posted a note on Facebook awhile ago talking about this why do they try to be your friend (on facebook or in real life)
Because they want nothing but the "numbers"! This is why Facebook is nothing more than a fraud! Get a life!
Because they are despret for friends. Some people just friend request people because they want alot of friends
because they want to be nosey and look at your stuff. (4real)