Nobody is saying give them no DR at all, but if you think it's fine a ninja or monk can tank 5 people as effectively as a tank or even do a better job at it than a warrior your opinion is just plain wrong, they don't need 60% DR at all.

25% DR for ninja and monk is more then enough considering their mobility and built in survivability already, sam, drg and reaper can be about 40%, but NO melee dps job needs tank level passive durability.

If you run into the zerg by yourself as a melee dps instead of waiting for the tank to engage first, you deserve to be blown up within 0.5 seconds for being out of position, and since you have a map (you do have your map open right?), there is 0 excuse to get caught like that.