Well, if you spend too much time playing it, & thats your main love in life, your passion, then of course you'll be a geek / unsociable.
I know people who spend most their time playing games, alone. It's what they mainly talk about, they go out & buy all the big games the day they come out, ect.
The main problem is that you're just sitting there with a controller in your hand. It's for lazy people to escape from the real world & feel like they're achieving something & are important cause they've defeted the final boss on hard mode.
It means they don't have to do anything in real life.
If you play a computer occasinally, you know, maybe 20 minutes before you go to sleep, then theres nothing wrong with that.
If you spend too much time & energy on anything, like reading, movies, cars, running, posting on interent dating forums, you'll be a boring, unsociable geek.
It's all about balance. You should ahve full, exciting life with many things going on.
But for most 'geeks' the only thing in their life is games. or something.