TO each their own. Personally, I do like to dps as much as I can on as a healer cause it really helps with runtimes. Dungeons could be as short as 13 minutes if everyone does their part and some of the more tedious bosses (like Guardian or God Kefka, you can skip annoying mechanics and not have to worry about them. Like killing the guardian in 9:30 and not having to worry about the biblio add that shows up. Of course, I can understand why people see it like that.