Time for a new thread...
What do you consider to be man's most useless/pointless/wasteful invention/discovery, and why?
Also it could be an occupation or some hobby, and as many as you like, your own personal top ten if you want.
I think myself the lamp-shade is pretty high on the list, you know, design a light, turn it on, then cover it up so most of the light is lost, I may have others but that'll do to get the ball rolling.
Oh, could we keep religion out of this one?