[bloodrops]

As some have mentioned, being a cleric is really not as easy as it seems. Having a cleric's responsibility means you have to make sure your party is healed and keep yourself alive. And yeah, that takes up a lot of hp/sp stones and potions. People that are not clerics don't care about it. Sometimes they don't even think about using their OWN stones or potions in hope to get some burden off the cleric. How nice would that be? The cleric healing here and there and just standing there attacking, not really caring about what the cleric goes through is just a BS.
When I'm on my fighter, I try to use potions and stones so the cleric doesn't have to heal me all the time. It's nice to get healed a few times. And when that happens, I thank the cleric. It's completely rude and thoughtless of one to verbally abuse the cleric because he/she wasn't healed well. If that happens, you should ignore them, let them die - who cares? They deserved it. If they don't know how to treat the others right and don't know how to be thankful, they don't deserve to be treated well by the others.