what musical instrument do you wish was never invented?

The vuvuzela, if that qualifies as an instrument.

I looked up what vuvuzela is, and I agree, it's much worse than cat piano.

Wikipedia quote:

The vuvuzela has been the subject of controversy when used by spectators at football matches. Its high sound pressure levels at close range can lead to permanent hearing loss for unprotected ears after exposure,[6] with a sound pressure of 120 dB(A) (the threshold of pain) at 1 metre (3.3 ft) from the device opening.[4]

The recorder (Brings back memories of school... 20 school children trying to play it never gives the instrument a good impression on the ear).

Harpsichord... ughhhhhh can't stand it. It served it's purpose in the Baroque era, but honestly, no one needs to listen to that pluckiness anymore. Let it dieeeeeee

Electric <fill-in-the-blank>

The finswipe.

Oh wait. That one never was invented.

The Cat Organ ( http://en.wikipedia.org/wiki/Cat_organ ).

how do you make 2 violists play in tune? Shoot one

Vuvuzela.

The piccolo...never in tune and just makes your ears bleed.