Thanks, lots of great responses!
Reading through made me realize that my main issue is with the "cleric as healbot". In one game I'm running, one player is playing a 5e life cleric, so he has been hitting that trope pretty well, though he much prefers to wade into melee.
I'm going to be playing in a game my daughter is running soon, and we're going to be running 2 characters each. I've rolled up a paladin and a bard. One of the players said "I guess I'll play a cleric", and I told him he didn't need to, figuring I had healing covered. He went with a light cleric, so he's going to be blasting! I'm waiting to see how it plays out.
If he can be an elf (or, better, a human with a magical initiate feat), and a 14 INT (or possibly CHA, if human), the blasting can include an attack cantrip. The only weakness of the laser-cleric trope is that there are no damaging cantrips that require a to-hit roll (as there are for sorcs, druids, wizards, and warlocks). For the light cleric, that (for me) does take away the fun a little bit, because players like to roll dice. (or if not, perhaps the DM can let the player roll the saving throw of the target of sacred flame).
Clerics aren't essential, but they can be so much fun to play in 5e. Playing with an unexpected background can also be fun: criminal, outlander, sailor...