For me it was a process of elimination....

Sprint? Me? HAH!!!!!!!!
Climbing is much of an option here in the sandhills of NC (max elevation change I've found so far is about 200')
Time Trialing...don't you have to be, ya know, fast? Not there yet by any streach of the imagination!
Downhill MTB...ah, see climbing above, that would require some sort of hill, right?
Long Distance Riding/Centuries/Brevets...let me do at least 20 miles once before I contemplate something with three significant digits in it, okay?
Touring...considering the speeds I maintain, smelling the flowers isn't a choice, I can't hold my breath long enough to not smell them (or the farmer 'fertilizing' his organic field....gah! , yeah, that was a 'ripe' ride there!)
Commuting...I hope to do that in the near future, once I figure out how to get my 50+ pound book/computer bag there with me...
Track/Velodrome...hmmm, not much change in scenery there, right?

Cassie, thanks for the survey!
Lara