>>542453739
They're naturally short, so the average adult human dick would be uncomfortably too big for them, or mobian dicks would be disappointingly too small for humans, like a white woman trying to get ridden by a horse or a SEA man fucking a stray dog.
It turns out that young humans are just the right size for snug, comfortable fits while being exotic and electric enough thanks to the forbidden nature of interspecies child rape.
Have you seen Rouge kick a robot? What's a concerned parent gonna do? By the time her cover gets blown, if at all, she can just literally fly away.