I understand that self sufficient characters are better to run with, and that crowd control spells save mana, but let's be honest; a cleric is a healer no matter what the build is. I have encountered some poorly played divine casters recently while playing my non-cleric characters.
All of my characters are self sufficient, and capable of healing others. If I am in a group with one of my melee's, and they become the primary healer in a group with a cleric or fvs, then something is wrong. Yes people can use potions and wands, but if the dps characters are spending half the battle healing themselves and others, the battle will last much longer, and someone is likely to die. The smoothest runs are the ones where the group stays together, listens to the leader, and kills things quickly.
There has been a lot of discussion on the forums about clerics not using wands and or forcing others to heal themselves, and I think this has led to some players backing away from the healbot role even more. You do not have to play as a healbot (I won't do it), but play your cleric as a cleric. It is a great responsibility to fill the role of a cleric. You will get all the blame and none of the credit, but often you make the difference between success and failure.
Trust me, I understand the heartbreak of running with a chain of bad groups as a cleric, and there is a tendency to back off a bit, considering the cost of carrying those groups. Just make sure you get back on the horse after you fall off.