Most fights have NOTHING that you can interrupt.
and no one said they did.
There also seems to be some misconception that only wipes cause damage. Just regular wear and tear causes damage to gear too. So when you can (and should) interrupt, use defensive cooldowns and CC's they will save you on repair cost. Fact not opinion.
Also read where /stuck now causes damage to gear and it is working as intended. From the point of very of calling a wipe in a Ops and everyone /stuck, I can kind of understand this (Not the same as liking it), but when I get stuck in a game defect, I really don't see the need to punish players.