Git just works most of the time, and any issues that arise tend to have to do with the complexity of the codebase rather than git (e.g., rebasing a large feature-branch over dozens of commits).

Besides, auxiliary tools aside (I use git shell and a bunch of aliases), the git executable too is still improving. It will be a long time before anything that might replace it reaches both the maturity and the tipping point of having enough extra features to make it worthwhile to consider switching.