Roman emperors, good or evil, had quite low life expectancy. Except the one that I don't recall his name that resigned to run a farm in Dacia. When asked if he wanted to return to be emperor, he said he was quite happy with his cabbage, etc. Can't blame the guy.
As for Caligula, well, dunno, mabe it was because of the horse thing lel.
As for Caligula, well, dunno, mabe it was because of the horse thing lel.