Well said @thecryptofiend. This is a similar pattern to dieting.
No-one ever really loses weight and keeps it off by following the latest diet.
And yet, when one fails they try the next one thinking it will work.

And they forget all about the previous 15 time dieting didn't work and all the weight they gained by following them.

It's the same with drugs - as you stated. when this pill fails, I'll try another one.
So much in medicine these days seems to be focused on minimising the symptoms, so you can still go to work, rather that addressing the root cause and fixing the problem.

Somewhere along the line, I think we have lost the reason for being healthy and well. 
It's so you can enjoy life, be comfortable and pain free, and go out and do things, not so you can continue to grind away at your job day after day making other people rich.