I'm like you, PS. I didn't realize he was only 65, I thought he was older than that.
True, he had is challenges in life, much like anyone else, but what I admired about him was that, he never tried to hide from it or create some BS cover story or anything like that. I just saw a tribute documentary on him on HBO or something (like three days before he passed away...creepy) and it had portions of his routine on there and they showed the one where he's talking about getting ripped on cocaine and stuff. Sure, he was joking about it, but you could tell he was trying to get a message out there as well.
I tell ya, Richard and Gene Wilder simply cracked my ass up in their movies together! They really were a funny pair when they worked on the same movie!
RIP Richard, don't let the angels give you any grief!