of course it was their father's fault. how could it possibly be their own fault?

or maybe the sisters were selfish jerks

plus, your longest hairs are the oldest, so are more likely to die than younger and shorter hair

I don't think hair ever stops growing. Each hair eventually dies and falls out.

Everyday, you shed hair. As your hair grows longer, more long hairs fall out. Then it reaches a balance point where the amount of long hair loss counteracts the growth speed of your hair.

I think that is normal length for men's hair. Mine grows to a similar length.