First of all, I have to get this out of the way. Quit calling the tank a 'tanker'. It's just plain stupid. They're called tanks, not tankers. Just in case you want to argue that someone who heals is called a 'healER' and someone who DPSs is a 'DPSer', don't. That doesn't even make sense. Just call the tank a tank, and not a tanker... it's a pet peeve.
So anyway, I hate being the tank. The role I like playing most is DPSer, because it's least strain and most fun. Healing can be fun, but it can be incredibly boring as well.