[kokanee]

I think a lot of folks in this thread are forgetting the first day they spent using git. It's kind of like asking why someone would create a text editor in a world where vim exists, since vim can already do everything you need. Sure, but it takes months to become proficient with and years to master.

Years ago I worked at a company that had a team of front end developers that used Dropbox for version control instead of git. Conflicts were prevented by the default "this file has changed on disk, are you sure you want to save?" warning in their IDEs. It worked incredibly well for that team, and they never suffered a single gitastrophe.