There's no one who "does not get flats", however, I agree it's possible that they have their use if you live somewhere where you can catch a bus/call a taxi/call a friend if you do get a rare flat, and you ok with exchanging the low long term cost and lack of maintenance in exchange for needing to hit the brakes sooner.

Disc brakes can definitely be fiddly annoying - they make noise if they get wet, they tend to rub a little if you're taking the front wheel on and off. I prefer rim brakes for summer riding, but as others have pointed out for winter riding they'll wear down your rim. Drum brakes sound like the lowest maintenance - but they do have their drawbacks.