If you don't have issues, good for you. I'm not saying hg is unusable, particularly if you're using it within an organization or community that enforces a set of tools, workflows etc. But if you look at the github community where people tend to fork dozens of projects from a diverse set of people, that clearly isn't happening with hg, and I think the "Some assembly required" is part of the reason why. Git, on the other hand, is very much "Batteries included".