It really takes a certain type of player to really latch onto the idea of Backgrounds and make them shine. I have seen a lot of what I classify as "wargamers" who come up with backgrounds like "Healer".
Pfeh. It's really annoying as a GM to run into these when you have other players who do things like:
- Hunted Mushrooms as a Dark Elf Slave
- Koru Behemoth Hitchhiker
- AWOL From The 14th Orcish Legion
It's so easy to build stories and even worlds around good backgrounds. So you have to draw out the folks who want to just use "Healer" or "Scout" and try and get their creativity going.