I'm expecting a whole bunch of answers like that, and then someone will timidly present some modestly positive story that goes against the grain.
Ehn... been at a bit of a distance, but what I've seen of library work hasn't seemed too terrible. Personal interaction has been mostly volunteer, but the workers I've worked with have been pretty upbeat about things, general appreciation seems relatively high, and customer base (such as it is) was pretty nice where I volunteered at. It's
definitely work, especially as the library size goes up, but not too backbreaking. Haven't even heard too many horror stories from folks in bigger areas, which is like amazing.
Pay's usually iffy and good goddamn luck
getting the work (fairly saturated and shrinking, iirc), but... there you go.
E: Non/not-for profit in general seems to lean more toward that kind of thing than, well, more directly commercial ventures. At least from what I've seen. Problem is making a bloody living doing that kind of thing, hum.