Come on. You know you use it. I use it all the time. It's obviously not the most sophisticated graphic program by a long shot. It's dated and it's extremely limited in its capabilities.
But Microsoft Paint is line an old shoe (I wear those too, by the way), and while no one will ever mistake it for Photoshop, Microsoft found out this week that it had vastly underestimated the program's fan base before making the announcement that Paint was being put out to pasture.
Vastly underestimated it, that is: