I've been told it's a good idea, and I've been told it's a bad idea.
It harkens back to the advice of the guy who built our deck,(which my wife promptly ignored) about if you paint your deck you'll be married to it, i.e. constantly and consistently doing upkeep on the painted surfaces to keep them looking nice. I get activated, and my wife paints the deck while I'm away. Now it looks like shit. Stick to stain he said. Sh didn't listen to him or me.
I've been told the same about the garage floor. Painting it begets constant upkeep.
We live in NY, where the winter is are already trashing the floor with melted dirty snow, water stains, salt and sand on the garage floor. It looks like shit.
I'm was thinking of getting the giant under car floor mats.
Is painting any better?