Most Helpful Girl
Dads just sometimes over react when their daughters go from dressing up dolls to dressing up themselves. Like small things just seem bigger to them, or like it's a gateway to something else. Like my dad was devastated when I first wore heels I think, because he just made up some crazy stories in his head about the next step after me wearing heels, just like how your dad has some crazy story in his head from you somehow going from a haircut to extreme plastic surgery.
Just reassure him he has excellent genes because he made a beautiful daughter who knows she's beautiful, and tell him you know those women ended up looking worse than when they started and you don't want surgery, I mean why fix what ain't broke right.
Dads are just a little crazy sometimes when their baby girls become women. Just look at how fucked up some guys are, and your dad knows more, it must be petrifying for them!
Most Helpful Guy
I don't think girls ever look better with shoulder length hair than with longer hair. Most guys I talk to think the same.
You'll miss it after you cut it, believe me.