So I am currently levelling a pally tank (lvl 47... almost there...) and I am usually happy about it if a dps manages to pull hate from me. I prefer that everyone in the group is going ham so that the dungeon ends quicker. If a dps manages to get hate from me, then they are putting out some serious harm on an enemy, which i am totally ok with.

And to agree with another point that was made, if I lose hate on an enemy (and I am equal gear level with the person who pulled hate) then it is usually my fault. Part of being a good tank is understanding that there is no consistent rotation to follow. Gotta stay on your toes and try and preemptively spot which enemies will give you aggro problems. It is not like it is difficult to see when a mnk/nin is wrecking a mobs face in, and then to adjust accordingly to make sure that enemy is on you.