Racecardriver
and good half of those people definitely has physiological problems, the other half I don't know but probably a quicj Google will reveal a lot of problems. I doubt they were taking drugs for fun.
Please do tell me which of these you think 'definitely has physiological problems' and which you 'don't know'. (Do you mean 'never heard of'?)
As a reminder, the list was:
Samuel Taylor Coleridge, Thomas Chatterton, Charles Dickens, Ernest Hemingway, Philip K. Dick, Sigmund Freud, Stephen King, William Wilberforce, Thomas Edison, Carl Sagan, Francis Crick
A quick Google might be quite informative and perhaps you would stop making insulting blanket statements on a subject that you seem to know very little about.
Just to start you off, while on and inspired by various drugs, Coleridge wrote the poem 'Kubla Khan', Francis Crick visualised (correctly) the structure of DNA, Charles Dickens wrote what are widely considered among the best novels of the 19th century, Thomas Edison invented and Carl Sagan made breakthroughs in theoretical astrophysics.
You might also want to add Paul Erdos, one of the greatest mathematicians of all time, who depended on amphetamines for his best work, and that's not to mention all of the brilliant musicians whose drug taking has led to some of the most incredible music of all time.
I'll let you enjoy exploring the rest for yourself.