I wonder what Duff's health is like - his organs must be devestated, what has it done to his brain and heart - i'd imagine after that much absue ur warranty has well and truly expired, doubt any of them will be hitting 80....
Look at Aerosmith or the Stones though. Aerosmith are in their late 50s, and the Stones are in their 60s. Both bands were notorious for their substance abuse, and they're still gong as strong as ever in their advanced age. How do these guys do it?