It's certainly better than a similarly stable SVN server, there's no question about that.

However, when it's down, I can't push my changes for others to review, or review pull requests. I can't update and pull in the latest changes, or checkout branches to help someone with a bug. If it's an integral part of your workflow, it can be quite a pain when it's down.

"I can't tell you how many times in my svn past where I couldn't get any work done simply as a result of the repo sever going down or having some other issue affecting its reachability."

I had the opposite experience, although an SVN outage would have been worse, I'm used to them being far rarer.