I also pretty much refuse to tank basically anything non FC related, unless im just helping people out with ifrit/garuda/titan in DF because of peoples horrible attitudes. I have no qualms about my ability to tank however, i also have 0 incentive to play with kind of a-holes that i routinely see flooding everything else I do and all the shouts. I can almost guarantee if the community wasn't so terrible there'd be ALOT more tanks around. As tank you should expect to be the first point of attack from from monsters, not monsters and your own party as well.