Depression, anxiety, early stages of Parkinson's, history of drug and alcohol abuse, no telling how many rounds of antidepressant/SSRI's (that may or may not permanently rewire the brain) during his rehab stints or treatment for his depression and anxiety. Sounds delightful! I think we should all give a try!
He seemed to genuinely like making people laugh. I wonder if his spastic ways of always going into funny voices or acting like he had ADD was his way of distracting his mind from the demons he faced. Everyone copes in different ways. I think he was a truly screwed up individual and it finally got the best of him. I can't fathom suicide, but I am not going to sit back and call someone a coward when dealing with those issues either.