It's good to have people like this around, they have so much of value to pass on, even if that's what not to do.
I'll be honest and say I'm not qualified to talk much about addiction and so will not, but what I know is that in life there will be people we miss for whatever reasons and that's as it should be. Your thoughts of missing him bring emotion and feeling and so he's still touching your life, hopefully positively despite the possible sadness at his self-inflicted demise (the hard drinking).
We will never know how we are thought of when we're gone, but I would like to think that someone misses me, thinks fondly and kindly of me despite my faults and malfunctions.
This comment isn't a Sunday downer my brother, just a comment from a human who has human thoughts and feelings.
I hope your weekend has rolled out well.
!ENGAGE 20

Thanks my friend...it's been just over a year since he passed. We are planning a trip next week to the graveyard to check-in. Time has flown by with everything going on in the world. It really puts everything in perspective, you know?
Perspective is good, it helps one drive forward, and to appreciate what's around in the present. Just the opinion of a knucklehead. :)