How the hell will he cope when he decides it's time to grow up? (I mean "old")
You just can't get away with staying jacked in your forties right into your fifties. You can still use HRT, hell, you may even be forced to, but you can't stay all fuckin big and ripped. An old man's CNS won't let him, let alone the heart, liver, kidneys, etc.
Show me an old man who is still jacked. Clarence Bass? Ha ha. Fuck me.