Other.
99% of the time I play, I DM.
I truly enjoy "creating worlds" if you will - down to minute detail. Not that I ever write it all out, but I have many many worlds living in my head, planned in such excruciating detail that I can really make the whole world come alive for my players... because I can walk in the world (in my own mind) in the places where the characters are and almost literally see through their eyes. And I'm simultaneously seeing the world through the eyes of all the NPCs they are coming across. In many ways, I think it must be a small "type" of how God feels - seeing everything all at once. I have been told that one of the most enjoyable aspects of playing games I DM is that the world I put the characters in seems truly real, with depth and breadth and change over time... but that's because I can truly "live" in my virtual worlds, so describing them is as easy as describing my childhood home.
I enjoy D&D because it's my time to create something beautiful - a world. I can't play piano. I can't draw for crap. I'm not a gifted poet. I can't act. IMO, my "artistic" talent, if you will, is creation in my mind - my physical body won't cooperate, but at least my mind can!
Not that I think I'm playing God by any means - but rather in some ways my D&D games are my "gift" to God - being "created in His image" I try, in my own little way, to create a world, just as He did... not out of jealousy or spite, but out of admiration and attempts at emulation - the way my not-quite-two-year-old son brings me a wad of paper with scribbling on it when he sees me writing notes... not because he wants to compete with me or replace me, but because he loves me and wants to be like me and share in the things I do.
My mind is the canvas, the rules are the brushes, and the stories are the paint. This is my "art time" when I can feel I'm more than just a computer (I'm very left-brained dominant in a family of right-brainers, so sometimes I feel like I got the short end of the stick when it comes to artistic ability).
Perhaps that's why I did the Enchiridion of Mystic Music - to compensate LOL. (j/k - Music - singing and trombone - are actually things I'm VERY good at).
--The Sigil