treatable mental illness (i.e. if he would just have talked to us)
It's not that simple. Sometimes the illness is perfectly treatable, but in practice you're never able to get treatment before you die, unless one of the people you talk to goes far beyond the call of duty and drops their whole life to help you get treatment and magically divines how and when to help instead of behaving like a bull in a china shop and making everyone else terrified of mentioning depression.
Link
One of us is no more.
He deserves a eulogy more eloquent than what I am capable of writing. Here's Cory Doctorow's, one of his long time friends.
It's a sad world in which you are being arrested and grand jury'd for downloading scientific journals and papers with the intent to share them.