I agree completely, however I don't think all 'lifters' do it. My own estimate from personal experience is that the extreme lifter vanity accounts for 50% of regular 'lifters,' and they are generally bodybuilders. I personally do not understand why it's supposed to be a source of inspiration to take vain, nice-looking bathroom selfies and then writing stuff about hard work, be all you can be, and other trite aphorisms. It's done entirely for oneself, period. What's more concerning is it breeds a generation of followers who are willing to do anything to emulate the physique in question, which leads to unhealthy life choices. Just to name a few:
1. Aortic pressures during very heavy (as %1rm) reach supraphysiologic levels, exerting a concentric hypertrophic stimulus upon the left ventricle.
2. Irrespective of excuses some bodybuilder 'athletes' make - saying PEDs are healthier than ketchup - it's quite clear that the drug cycles employed by a high percentage of the 'bodybuilding community' increase hypertension, atherosclerotic plaque formation, kidney disease, cardiomegaly with heart failure, liver abnormalities (NOT JUST oral drugs, as liver ends up doing the processing for many injectables; LFTs often not sufficiently sensitive to detect), stroke rate, and several other abnormalities. The reason many studies aren't done on the long-term effects of poly-PED usage is that no institutional review board would agree to a sufficiently comprehensive study for ethical reasons. Further, this is a practice that many potential participants often prefer to hide from others.
3. Bodybuilding diets are notoriously unhealthy. There is nothing physiologic about eating 8 times per day for a total of 5k+ calories (often the higher calorie burden is necessitated by PEDs such as growth hormone). Even without the PEDs, high lifetime caloric consumption is linked to a lower lifespan, due to the higher mitotic stimulus for tissues with a steady turnover rate.
4. Bodybuilding and powerlifting are associated with a high rate of injury. Many of these injuries are made worse or more frequent by some (not all) PEDs. To be fair, performing any physical activity over and over again - even with perfect form - subjects one to injury risk.
I only mention this to counter the claim that the narcissist bodybuilder community has that they promote others to lead healthy lives. In most instances, the narcissist bodybuilders are simply promoting more narcissism and poorer health.