I was trying to stay out of this.
First off RIP Mr. Williams, he is one of the first actors that I ever remembered.
Second, in our day and age there is no excuse for actions like this. It is selfish. I have no sympathy for drug addicts, no even the one's in my life. They make a conscious choice to swallow that pill or stick that needle in their arm. Addiction is an excuse. Me, I'm an alcoholic, 3rd generation on one side, 4th generation on the other. I chose to control my addiction rather then it control me. Nobody is forced to do drugs except by their own psyche.
To choose suicide over help is selfish. What about his daughter, his wife, his other family and friends? By killing himself he changed all their lives. There's always a choice.