I think it is possible for a person to change personality when he/she gets too attached on technology?
I'm a gamer and I prefer violent gore games when playing on my computer, I think that affected that way I speak and treat others in a more aggressive way and IT's really not a nice change.
I play violent games but not that gore and I'm still the same. I know it affects you mentally the longer you play so I think you need not to play too much because I discipline myself to only play 2-4 hours.