Nothing I can say as a doc that hasn't been said; addiction may or may not be in the cards for this man, but he's playing with fire. Addiction is characterized by denial, and everybody thinks "Yeah, him, but not me! I'm to smart/strong/savvy to get caught up in that".
All coke ever did for me was keep me up all night, empty my bank account, piss off my friends, and make my dick limp. Gee, what a great drug, where can I sign up for more!
Alcohol, for some, is just as bad; I worry about the "heart healthy" thing, as a lot of alcoholics will grab onto that as yet another bullshit excuse to keep drinking. For me, I just stay away from it all now.