at 50 i'll have inherited millions and living like a king in thailand/dominican republic etc
not be a washed up neverhasbeen like be there living in a dump chasing plastic tropies
But how the physique will be at 50 is due to many factors.
Amount of usage, genetics, how your body have responded etc, ruining the receptors of peace
It all depends on your usage now until then and how your body will respond as you become older.
Metabolism slows down with age as well.
Everyone should strive to look like Be There at 50 though.