My Mum took 3 - 5 Tylenol 3s (by prescription) for over 20 years! When I took her to a 'natural' healer last year, he could hardly believe that she still had a liver!! She's down to 1 every day or so now -- at 87, she won't be changing and there has been some progress but, although she has lost faith in the docs, she won't be doing what it takes to really clean out her system.
The docs have been dispensing magic pills for a long time now; people think that is the norm until there is a near-catastrophic illness which sends them looking elsewhere for solutions. As always, people just take the easier route. With the current state of health (or lack of it) in North America today, more people are looking elsewhere.