What's the real argument for removing them?
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DnD has a long history of combat effects that leave characters unable to act. Sleep, for one. There are stun spells and charm spells and states of confusion.
Saying "it's not fun" kind of ignores all the people who have fun with it.
It's like making an argument that the "Skip a turn" card should be removed from Uno because some players don't want to skip a turn.