I can't give you clear reason why I play) I think it's fun)
I always played)
My current interest, habits and even skills and knowledge are based on video games)
For example I am historian just because I played Cossacks, when I was eight.
I adore history of the USA and southern states especially, just because I adore BioShock Infinite
I am libertarian and I read "Atlas Shrugged" by Ayn Rand, because I am big fan of Bioshock I
Btw my music tastes based on my game experience. I love country and folk, because this music was a soundtrack of Fallout
So games actually is a huge part of my live. Why don't you like it? xD