As with most things in life, being big is what you make it.
I am sure there are many, many people, especially the young, who want to be big because they feel small. They especially want it quick, without much effort. They are kind of spoilt. Others are just fearful. Most are probably young, others are old but a bit immature. Some might even get to actually be big and strong but still feel that little child inside and are overcompensating.
HOWEVER you can’t say that is true of most of those who have achieved great size and strength, whatever insecurites they started out with (if any) have probably vanished on the way of a long arduous journey.
You might be able to say that of a majority of people starting out, and a lot of them will probably drop out and fail the tests of discipline.
Also, overcompensating for feelings of smallness / powerlessness is not the only reason to want to be big. Like mountaineers, some do it “because it’s there.” And it is fun. And it is addictive to see your body adapt to change, it is a miracle and a wonder.
And there are many health benefits - I wish the normal was that EVERYONE pursued muscle size and low fatness, hard work, discipline and good diet, instead of the reverse: quick food, emotional eating, laziness. It certainly would help the national health budget. And the huge market created would cut down the price of supplements and healthy foods.
Also there is always the aspect of pride, but remember, pride and conceit are two different things, and one doesn’t necessarily mean the other is present.
This sport of bodybuilding is an important one, because as humans push themselves in this arena, they make discoveries of how our bodies work, and lead science in ways that are otherwise ignored. There is not enough focus on preventative medicine, because the money (drug companies) is in treatment. Imagine if there was no bodybuilding, what knowledge we simply would not have regarding diet and exercise.
Personally I just like to lift weights it is fun. The biggest problem is having the jeans wear out between the thighs, maybe I should invent a new kind of jeans with a hardwearing inner, or a sort of slippery bit, man that ain’t a bad idea. Or maybe I should scotchguard them. hey … problem solved.
Prox X I know hundreds of doctors and there are a few with tats, shaved heads and facial piercings. It is not normal but it is around. But what often surprises me are the top docs, very conservative looking, who have really wild pasts.
Tattoos especially were such a sign of toughness in the old days, these days, it is hard to find a young girl who isn’t tattoed on 5%+ of her body. Especially on the back around waist level.