1) It makes you happy.
2) It's not harming anyone else.
So, you're definitely not a loser in my book.
However, as another member already stated, if you end up doing this as a grown man in your mother's basement, then I'd really reflect on this question if I were you. I'm assuming you're rather young.
Avidly playing video games is nowhere near as self-destructive as doing what many other youth do--drinking, being wild, having orgies and $hit, popping pills, etc.