Its an addiction - simple as that - its sad to see that guys go to these extremes with dieting, drug use etc - but its a cocktail of bad news really - I dont think 1 thing on its own could kill you as such (besides the diuretics) - but all mixed together over years and years - of course not many people are going to come out the other side with no health issues or not dead.
Is it worth it? I dont know - depends how you look at it - some guys have made millions from bodybuilding - so is it worth it to them - yea I would say so - but then you have the LARGE % of bodybuilders/pro bodybuilders that will never make a $ off bodybuilding shows directly/sponsors - is it really worth the risks to them - fuck no - but they are addicted so nothing else really matters are the time.