Being able to Just Do Things without mucking around in config files, building a, b, c things from source and dealing with random missing dependencies d, e, f. Then having to search online to fix Random Obscure Errors g, h i, etc, and so on. Or in the case of bsd-likes, maybe needing to write ports and adapt makefiles, etc.
I've gone Arch -> FreeBSD -> OpenBSD -> Debian for my main pc, and osx for my laptop. I used to like manually tweaking and configuring everything but these days I just want to turn on the computer and get into a workflow with as few headaches as possible.