My dad had issues as well. But 50 years ago if they diagnosed you as clinically depressed the "solution" was electroshock therapy. Safe to say it didn't help. He ended up in and out of hospitals and group homes for years, missing most of my childhood. Eventually he became stable and a devout Christian, but also chose to cut himself off from everyone except his 3rd wife. I really didn't know him well, and spent years resenting his absence before better understanding it.
In a strange twist I ended up working in the mental health industry for over 20 years, albeit in finance and administration. I saw/heard a lot of stories of extremely difficult lives, people losing everything due to schizophrenia, major depression, you name it. Surrounded by psychologists and psychiatrists I learned a lot just by listening.
Sadly, Joe Public has little understanding of mental health and we're still dealing with stigma attached to it. No one asks for bipolar disorder, and it shouldn't be any more embarrassing to admit you have it than to acknowledge you're battling cancer. And yet, it is seen much differently. We have a long way to go.