Oxygen is an extremely nasty, extremely corrosive, extremely toxic gas. It's just that life has evolved to use it, and engineering has evolved to deal with it.

Oxygen is an extremely nasty, extremely corrosive, extremely toxic gas. It's just that life has evolved to use it, and engineering has evolved to deal with it. Think of how dangerous forest fire is. You have billion dollar companies who's main product (paint) is to prevent the damage from oxygen (PPG, Sherwin-Williams). Walk into any workshop, and the most thing is going to be the oxygen cylinder.