Is it just me or are most TS uncircumsized.  Not that I mind, but I'm just curious??

One explanation I heard was that the cultures in which TS is more accepted and common (lots of hispanic TS's for instance) are also the cultures wherein circumcision is less common.

This true, especially of Latin and Asian cultures. Moreover, the practice of circumcision is greatly declining in the US as the myths which surrounded it a generation or two ago have been largely dispelled. I wish I had not been mutilated as an infant (exposing the glans makes for easier hygiene, but also reduces sensation there due to constant friction with clothing etc.), but I don't have any animosity towards my folks for doing it as at the time the doctors told them it was best. (However, I'd like a word with those doctors....)