For multiple reasons but the main one is so I can actually play a game, without the opposing player going into tryhard mode so he can beat me. It's even worse in 2v2, where quite a few of my losses were due to teammates asking "Are you REforever1911?" and when I said the one and only, they leave the game.
I also don't want people to know that it's me they've beaten, otherwise they'll just go onto CoH.org and post the replay...it should be the other way around.
Okay this is a little insane. I see popular/good players all the time in randoms and they don't cause people to leave or throw their hats up.
And if someone beats you and posts a replay you should be able to handle it, I mean christ man this is kinda sad.