Life is not a computer you can hack. I bet we barely understand 1% of how our system works and trying to hack it means one is not even aware of their ignorance.
(Steroid creams to fix skin conditions, caffeine for energy, alcohol for relaxation and fun, anti-inflammatories, antihistamines, the list goes on.)
Oh, if one sees the enormity of complexity body & mind has - one can be sure he can not foresee all side effects. I like that you gave examples like caffeine which messes up your nervous system or alcohol which destroys your conscious attention and lever, among other things :)
>Are you also advocating against medical drugs or vaccines?
I am only advocating about being conscious of how much we don't know. If medical drug or vaccine saves lives - I have no problem with it, still most likely we don't know all the side effects.
(Although, PSA, I do understand that the vast majority of people whose sleep is ruined by alcohol or caffeine or both are also too addicted to quit, and this isn't at this point a conscious attempt at "hacking" anything.)