[elkfersupper]

It is hard and requires many hours of training and hard work.

But, so what?

Is there money in it? Does it result in commercial endorsements and a long-term cashflow stream?

No.

It is adults with more muscles, longer limbs and more stamina pretending they are children.

[publius911]

Is there money in it? Does it result in commercial endorsements and a long-term cashflow stream?

That may be viewed as a crassly profit definition...

How about, "Does it provide a useful, beneficial service or product that is actively desired and sought out by society at large?"