I don't know one person who could stand it.
All part of our 'make-up'.
It makes me cringe...and also I get a nasty 'tic' from it.
The tic doesn't last long, but is very embarrassing.
My son did it a few times, trying to be smart!
It doesn't bother me. I don't like it and I would never want to listen to it but if I hear it, well I've heard it and that's about all the reaction it gets from me! I think it makes people cringe because we've always been told it should make us cringe. There are far worse sounds you can hear, in my opinion. A baby crying hopelessly, a bomb going off.... nails on a blackboard? Not a problem really.