A "sport" where you have to invest your health and put it on the line to potentially reap the rewards is a poor investment choice IMHO, the success rate is low depending on the definition of success in BB, hence this is a high risk investment with poor yields, no sane man would ever touch this with a barge pole if we merely used thinking logic. Furthermore, the success if achieved mostly leads to an empty glory rather than afford an actual prosperous life, this is not something I want my child to go into.
Mr Olympia winners earn 200k US dollars before tax, a lot of this will go on tax then you can make quite a bit on the side but you have to stand on booths and sell stuff like t-shirts, proteins, signed pictures and videos, guest pose...Now move away from Mr O and the earnings start to drop drastically. Hence a lot of BBers end up selling their dignity for cash (see the Nick Toscani example). In reality an exec earning 6 figures from the age of 30 which is reasonable and retires at 65 will earn so much more and get a decent pension on top at retirement with two kidneys.
Having said that BB'ing is great as a hobby, I enjoy it and it gives me a purpose and an escapism outside my work and social life. Used correctly it can enhance your professional and love life and contribute to making you a happy person overall. I would encourage my son to have a sport as a hobby, bodybuilding included as long that it doesn't get out of hand or try to make it a career.
