I'm a HUGE gamer, and I believe it's the main reason I don't have any friends
I get on with anyone really well but once people find out I'm a gamer, the conversation goes quiet.
Also I'm a campaign gamer too, I do like multi-player but I love an engaging story!
The main problem is that I game in the same room as my partner (I've got 5.1 Surround Turtle Beach Headphones) and chatting interrupts his games unless it's not story driven (ie Bejeweled, Forza etc).
I can also be fussy about who is on my friends list! (so far I've 15 and I actually know them all, rather than randoms)...obviously this makes it difficult meeting new people and the fact it's affected by my OCD doesn't help either!!!
I've probably put people off me straight away here haha!
I play (in order of most used):
Xbox 360 (main)
Nintendo 3DS
PS3
PSP (soon a Vita)
I am a nice person really, sensible (and/or sensibly immature lol), good sense of humour, quiet/shy.
Gaming Kids irk me though when they get lippy and know it all, but doesn't everyone feel that way?