Not all, but many player absolutely hate not doing something useful every turn. Like, a single turn where they don't attack is just a horrible thing that will ruin their entire week. They'd rather throw a rock for 1 point of damage than dash to get into melee. (This is often correlated with players who will must use their bonus action every turn, in my experience.)1. I can't believe this thread is still going!
2. The quote below makes me want to start a new poll asking "Is one turn really all that valuable that losing one to have to do anything but you'd most want to do is a bummer/unfun?"
This is building on the frequently expressed idea that "no one ever disengages because it wastes a turn."
But most players are okay with occasionally being less than useful. Everyone has a different limit, but un-fun monster/encounter design is frequently too much of things that shut a character down. (If it's not just things dragging out.)