FWIW, my (non tech-savvy) mum and dad have been running Zorin for years (and Xubuntu prior to that), without any issues. The only times I've had to intervene is for doing an OS upgrade, which was a manual process, but Zorin now includes a GUI upgrader which should make things even more easier.

Folks who claim Linux is too unstable or complicated for home users, and think you need to use the commandline for every small thing, should check out Zorin (or talk to my mum and dad!).