id agree its not the best thing, but i am a firm believer that if your interested in competing and surpassed ur genetic potential i dotn see the need to some off,
after all the time period id be off their would be descent amount of muscle loss, and time off wouldnt be that long since if i wanna compete id need to bulk back up, plus the fat gain on time off would make life harder
i dont think older dude can get away with not coming off, the same thing applies to them as it does ot anyone else, people just view it as more acceptable coz their older men, nothing else
as for permanent shut down, their is no proof of this, their are good and bad stories of people believing steroids caused this but their is no scientific literature to support this claim
however i do believe that it is a possibility since its stupid to deny bad things can happen, and have accepted that
as for knowing what im doing, i dont believe im guru but i have descent knowledge and research into anabolics to have a good understanding of what im doing, and i dont think theirs an art to bridging, its really about using the smallest amount of steroids in order to maintin the most mass, while keeping sides low as possible and priming the body for another blast