Great observations, Loadmaster!!! Thank you!!
Now, here's some girls who have suffered serious mental deterioration through being used and used and used again for relentless hard sex.
Their eyes are not seeing. Their dumb mouths hang open. There is nothing in their heads except a craving for more cock - as much as they can get, in all their holes - and, of course, an endless diet of sperm. Mental development has not stopped - it has been thrown into reverse. The only sort of development they might now expect is breast augmentation.