What should we do to longish-haired son?

If your son's hair is getting longish, but he feels comfortable with that and refused to cut his hair what are you going to do? Force him to go to barbershop; Make him bald by force; Let his hair the way it be, because it's his freedom. NANI!? GTFO OF MY OFFICE! WHY SHOULD WE TAKE AWAY HIS FREEDOM? RIP LONGISH HAIR