Barely scratched the surface for me here lol, I could write about this for days.
For me gaming is part and parcel with technology. I've always been fascinated by games, even writing them myself over the last 20 odd years. I used to game because of the appeal computers had on me, these days not so much. Primarily I do it for the challenge.
I've always believed that games have the potential to make you better. From hand-eye coordination, increases in memory and problem solving power to more abstract things, like viewing a situation from a different perspective. These things have all been proven.
I also believe that games can appeal to evolutionary biology factors. Sure, there's not much in the way of hunter-gatherer simulators (not that they don't exist) but ultimately it's our base desires and urges that are nourished and encouraged by good games. Ask any competitive counter-strike player about adrenaline, it's the same report you'll get back from anyone who's not fazed by their involvement in actual combat. It might be watered down considerably due to the lack of immersion but it scratches an itch, if only softly.
I was about to go off on some wild tangents so to summarise, I play games because they're actually enjoyable AND good for you. Just like all the other animals, even if they don't know it
This is my sandvich. There are many others like it, but this one is mine. My sandvich is my best friend. It is my life. I must master it as I must master my life. Without me, my sandvich is useless. Without my sandvich, I am useless. I must eat my sandvich true. I must shoot straighter than my enemy, who is trying to kill me. I must shoot him before he shoots me. I will. Before lunch I swear this creed: my sandvich and myself are defenders of my country, we are the masters of our enemy, we are the saviors of my life. So be it, until there is no enemy, but sandvich. Om nom.