[themagician]

That's probably not true. You'll try (and probably already have) all sorts of drugs which are deemed, by some government authority, to be "safe" which have all sorts of nasty side effects. Many "totally safe" drugs have much worse effects than psychedelics.

You will get 10% worse at focusing on solving a problem and then 20% just as a result of aging and there's nothing you can do about it. Your eyes will get old, your vitreous will start to detach and you'll start to see what looks like worms floating around in your eyes. Again, nothing you can do about it. Your hearing too will slowly start to degrade. High frequencies will fade to dust and those below them will become more apparent and, in some cases, become quite annoying.