I've been a hardcore vi user pretty much my entire life, but I decided to force myself to spend a year using emacs a while back just to see what all the fuss was about. When the year was over and I "allowed" myself to return to vi, it was like a huge weight lifted off my shoulders... to this day I still don't see what the hype was about. On the plus side, though, I memorized the emacs cursor movement commands, which…
That said, I'm curious what the weight of emacs was on you? If it was that you were wanting to be in the other editor, than it makes sense that you should stay in the other editor. But this is no different than a lot of things. Is why some folks don't like changing the vehicle type that they use daily. Very little rational argument one way or the other. Such that, yes, you should use what makes you happy. Not only does it make you happy, but you are probably more effective because of that.