Anything can become "fine" with enough practice and muscle memory. I'm a fairly advanced git user and manage to use it mostly painlessly even for relatively advanced tasks but I still think it's pretty crap overall. Not as crap as it was 15 years ago mind you, but not great.

I was a big proponent of Mercurial for a long time because I thought (and still think) that the UI and defaults were vastly superior for most projects which don't have the needs and workflow of the Linux kernel. I gave up a few years ago when it became clear that git was VHS to Hg's Betamax.