I'm like Raliuven-- I mean to go for something else, but by the time you punish all the civs who won't trade "fairly", its hard to avoid a domination win. Maybe if I could get past the visceral aversion to razing cities, but I can't...
Gee, I'm finding a lot of kindred players! Describes my style. I always start out thinking "Space" and get sidetracked. I don't know if it's some hidden good part of me, but I also can't bring myself to raze cities. The only conquest wins are on small maps where you kill everybody fast.
Then again, I can't resist SoZ if I have Ivory - even use a Pyramid prebuild. We know what that does to our attitude. Only ancient era wonder I build.