Having worked with cvs and svn, git has been an absolute blast.

That said, the first thing I do now in a repo is jj init --colocate. The fact alone that there is an operation log in jj, so you can easily revert your last command, or go back to any point you want, is mind blowing coming from git and having experienced frantically digging through the reflog.

But that aside, the way to work with branches ahem bookmarks, commits, conflicts, just makes so much sense in a world where simultaneous feature branches are a thing.