There is no choice, those are called unviable.
No one would take a cure that heals for 50 damage into an endgame raid like even NORMAL alexander, even there that'd be a joke. HOWEVER if it healed appropriately and scaled properly with other classes it wouldn't be such a big issue at all, look at Paladin's Clemency. That is FAR from a bad ability.
The problem is 100% scaling.
