*brushes teeth with a move*. (isn't actually playing game. This hurts my teeth, why am i doing this?).
I kind of get why a lot of devs do QTE's. Like trying to keep a player active, instead of just showing them what happens.
Also you can do a lot more control mapping by making it more context sensitive. Instead of always having this set of commands, instead you can do things like brush your teeth. (As opposed to just mapping the square button to brushing your teeth. Which would be hilarious.).
I think VR and Motion controls should do more to eliminate QTEs.