So why does Mario wear gloves?Some people think that it has to do with his job as a plumber, but I have my doubts about that. He wouldn't need to wear them all the time if he did that. Also I'm sure his gloves would be quite stained unless he keeps buying new one (though that would explain the extra glove in Luigi's Mansion).
A joke answer I came across was that Mario was a serial killer and used them to cover up his trail. Now this is implausible as well, Mario hasn't killed anyone since I last played Super Mario Maker yesterday... um.