Yeh, I agree with this. My art (painting and building) comes at a much faster rate when I am content. Having time and metal space to contemplate colour scheme, being confident to start something bold: that doesn't happen if I am tired, preoccupied or depressed
You probably don't know very many poor people then, because poverty, food insecurity, physical insecurity, homelessness, job loss are all very common depression triggers. It's just that these cases don't make the front page of newspapers at the same rate as celebrities committing suicide.
> no mental bandwidth for things like spiritual constipation
That's a feature, not a bug. Fighting for life has more meaning and purpose that yearning for death. We're designed for it. It has only recently become atypical.
Over-emphasized maybe, but myth? Could Doyle have written a sympathetic lonely depressed addict so well without more than academic understanding of those things?
He was a physician and had said that his experience treating patients influenced his characters. So, he had more than academic experience, but I'm not sure if it's enough to prove he experienced those things personally.
> An effective education requires a certain amount of torture, and it works better when self inflicted.
It's the tortured artist myth. You can turn pain into art but it's not a prerequisite.