Take my baseless speculation for what it's worth, but could it be that you were depressed because your life was too easy? We humans are meant to struggle through adversity. Can you really appreciate your financial security if you've never faced financial insecurity, or appreciate companionship if you've never experienced loneliness?

It’s a reasonable question but I doubt it. We weren’t affluent at all and I worked my butt off for everything. And that’s good, because I agree that if things are too easy it turns into a curse.