Do you think short hair in men is considered being under society's control, such as in military or prison?
No, it is more for their comfort.
I think so too. When it comes to hair style comfort is the priority in my opinion. They should not feel uncomfortable
Some men like long hair for beauty reasons and some like short for same reason.
I agree. Aside from beauty it can also be many other reasons such as fashion, culture, and trends
Men look good either way with both long and short hair.
I have long hair which reaches my chin.