Why aren't you attending FragBU?
1) I suck
2) I'm out of practice, hence the reason for #1
3) Matches are either 100% balls-to-the-wall competitive, or 100% clownage
4) I can't hit anything. May be due to the poor server, but more likely due to #1
5) I'm getting older (may better explain #1), and would rather play a party style game these days
6) Not much free time lately, and when I'm free to play, I don't want to have the frustration of getting my butt handed to me in a game that I used to be quite good at
7) Did I mention I suck?
These are the reasons off the top of my head. There are others.