This is the first time I've ever heard someone bring this argument. Ignoring the health risks involved with nicotine, the 'performance boost' is negligible. It's less than caffeine.
> but we are way too quick to dismiss the possibility that nicotine itself may have been a civilization booster.
There are nicotine gums and patches available, and a very good reason you don't see people who don't smoke using them, because the idea of using nicotine as a performance enhancer is crazy.
A silly question, but why not just distribute cocaine or Adderall without prescription if you're concerned about performance? Where do you draw the line ?