Would your planet be healthier without nitrogen?

I don't know about yours, but ours would be in BIG trouble! :-) (I know, Wikianswers wouldn't let you write it the way it made sense - those bastards! :-) Anyway, the first two reasons that come to mind why Nitrogen is vital to the health of our planet (and they are enough!) are: * If the atmosphere were all Oxygen, the first fire would be the last one, that is it would burn like crazy until everything was gone (ignoring second order effects like build-up of Carbon Dioxide), and * Plants depend on a Nitrogen Cycle for their fundamental existence - without Nitrogen, no plants (at least as we know them). Keep your fingers crossed!