I not only can make a perfectly effective cleric who only heals occasionally, I've been playing one for a year and a half and we've gone from 1st to 10th. Will I stand people back up when they fall? Sure. And I have one 10 minute casting time out of combat healing spell that I use occasionally. I let people know upfront what type of character I play. We have a divine sorcerer who has some healing, but he tends towards the same "stand up up if they fall" sort of healing, and spores druid who doesn't even have a single healing spell prepared ever - unless you count Animate Dead.