Why is my father controlling of the length of my hair?

My hair is none of his business. He wants me to have my hair longer and I would rather not have it longer. In fact, I want a haircut. I have what is known as a pixie cut. I just wonder why men are so controlling over things like hair. Often men in my life have said things like "oh, you had long hair before. why did you cut it?" as if me cutting it was a bad thing in their eyes. Mind you, these men are friends, who I would never date.

Why is my father controlling of the length of my hair?
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