Just a quick reminder that Junior's mother,

[MadameButterfly]

31. It's not just one thing. Losing a parent is big

but at what age and what kind of support system is there after?
When you live in Camelot (even before RFK ran for president) and Dad is about to become leader of the free world, that's another factor.
RFK Jr. did have some problems before the assassination, we don't really know that nature of them, but he may not have had the skills his other siblings had to rebound.
Being a Kennedy has it's advantages but also a lot of pressure.
Once drugs entered the picture, of course everything gets worse.

We are all responsible for ourselves regardless of the circumstances and I'm not saying he isn't. His response to his situation is tragic and cruel.
But to say we know what it was like for him glosses over a lot we just don't know.

Most people who have taken the path he has taken would not have had the opportunies to act out with impunity, or ever been given the power he now wields. I expect there are lots of people who have crashed and burned, unable to overcome tragedies. We never hear from those people.