So much great stuff from that decade, when you actually had to have musical ability and stand out from the crowd.
80's glam/hair/prog metal for me (Dokken, Ratt, Queensryche, etc)
Plus Maiden, Priest and Sabbath. Early black metal (Bathory, Venom, Mercyful Fate, Sodom etc)
Early Death Metal...
Yes and no in my opinion. Sometimes emotional/physical anguish brings out great creativity. But not always.
Some people are born to dream and can come up with creative ideas in any possible conceivable situation.
Some need a push, either from life's tribulations or whatever.