i agree with you. those folks are a ticking time bomb. the body has a remarkable ability to adapt and overcome the most flagrant abuse. but one day it will all come crashing down and they will be much older and worn out and unable to cope with the inevitable release of all the toxins they have been storing up for their special day - the day of their premature death from "natural" causes.
it is a choice; party now, pay later. better to encounter the toxins now, get them out, keep them out, and soon, you will feel like a party all the time and they will be complaining of all thats wrong with them, or just drink themselves to death.