Came here to say exactly this. That financial crisis ruined countless lives. The dominos fell all around the world. Across the Atlantic in Ireland I knew of several suicides. Most of my friends were at the age where they had paired off, and got onto the property ladder with tiny, overpriced "starter homes". Why? For one, to get out of the rent trap. But mainly because they wanted to start a family. Most of my college buddies ended up sentenced to 15+ years of negative equity. People blamed them for making unsound investments, but they had already delayed having kids well into their late 30s, and had no choice. I know families with several teenage kids who never recovered financially. The big banks repackaged bullshit subprime mortgages into CDOs that the ratings agencies gave AAA+ ratings to.
Frankly, I think that the perpetrators didn't go to jail for the same reason that a huge number of Nazis avoided consequences after WWII: there were simply too many people complicit in it, but no chief architect. There was a simple choice: prosecute them all and lose the whole banking sector, or bail them out. So the government decided that the taxpayer would bail them out. The same tax players who lost homes and livelihoods. And they weren't just bailed out financially, the slate was scrubbed clean.
What Bankman Fried did was nothing in comparison. I believe should go to jail, but 50 years? That's probably more than first degree murder in most states.