I'm so used to VG standing for vanguard that I thought this was about CFVG for a moment.
I mostly play video games because of the following:
-Gameplay is exciting and leveling on the game really feels like an achievement. Immersing yourself in the game's world and becoming stronger really feels great, no matter how "pointless" video games may be to some. That's also why I push myself to level on MMOs.
-Storyline. Video games are another form of media, basically. They're like books you can interact with in some way. Of course, some games don't have stories (or rather, don't need one) and still succeed, and video game stories are generally harder to write because video games are more difficult to create than books.
I think that's it.