mw13:
I’m not sure what we disagree about.
But that doesn’t mean somebody starting down the path of wickedness has physiological problems. They are just normal people who have chosen to follow and strengthen their inner monster.
I’ve heard the GR”A says that every aveira ever committed is due to bad middoss. I don’t know how to define normal, but they are suffering emotionally, since bad midddos = emotional imbalances.
“Uletaaveh yevakesh, nifrad” a person seeking their desires, becomes lonely. A good Frum psychologist may be able to help a person out of just chasing their taavos etc.