The git command-line interface sucks
When I use git, I'm scared I'll break something. I just talked to an open source celebrity who has used git for 3-4 years who avoids using the CLI because he's afraid he'll break something, and uses Tower when possible. I recently had a client accidentally delete their work because they didn't understand git. My fear of breaking something is well-founded.
You can't put a price on the confidence that source control is supposed to give you. That confidence suffers when people are afraid of causing irreparable damage during normal use.
This article lists a few ideas on what git can do to improve.