When I first read the question I almost fell off my chair. The answer is YES. I have used source safe, star team (briefly), cvs, svn and now mercurial. I haven't used Git but I understand that it is conceptually similar to mercurial. I keep most everything in mercurial repositories, not just my projects.

I much prefer the distributed stuff. Just make a repository anywhere now it is an awesome concept. Soooo much easier than fiddling with an svn server for example. (I am talking about the set up of the server.)

I personally think it is completely worth it to get your head wrapped around the idea of distributed revision control. Aka mercurial or git.

Rolling eyes and shaking head at all of the other folks on this post who recommended avoiding learning revision control as soon as possible. That would be a mistake.