The only reason I haven't played all of them is that I haven't played that much 3.x yet. I expect that in time I will play all of them. I did have characters of all seven races back in my 1/e days.
Interestingly, even though I'm rating half-elves worthy of relatively early eviction from the metaphorical island (if they weren't likely to be kicked out this round I'd vote them out next round), they are pretty high on my own character list, probably second to humans.