I normally DREAD whenever a harmonica player shows up and asks to jam with whatever band I'm with... On the whole, I utterly LOATHE most harmonica players! None of them know when to shut up, lay out, tailgate, or simply take a rest at all!
They step on EVERYBODY, play through your solos, on top of the singer, and basically suck
BUT... there's a couple of REALLY good ones I get to play with very occasionally. And they are a delight. So I force myself to never say I HATE the harmonica... just harmonica players..!
Maybe, rather than a list of instruments we hate, we ought to have a list of instrument PLAYERS we hate..?