I started wearing my watch on my right hand in college, 25 years ago. I injured my left wrist so, had to for a while. I realized it was more comfortable and that my right wrist was bigger than my left (I'm right handed) and it fit better. Never went back after my injury healed. You know what they say, "once you go right your done for the night".
Now, there are other reasons that I am not at liberty to disclose, as I have been sworn to secrecy. The lives of innocent women and children depend on my discretion in this matter. If I told you, you would be visited in the middle of the night by a large bunny rabbit bearing gifts and squirrel larva. And trust me, you don't want that.
So in conclusion, please keep wearing your watch on your left hand. Those of us who carry the "burden of the right wrist" are doing so in order to save society from chaos and mayhem. When you see us, just say "thank you" and buy us a beer.