With extremely long hair, many women go through a bottle of shampoo and conditioner in a week. Hot oil treatments? With so much hair, it's easier done in a salon, but it gets expensive. Long hair is ALWAYS the more expensive to have attended to than short hair.
After hair gets a certain length, styling it yourself becomes nearly impossible. Many salons REFUSE to perm, color, etc extremely long hair due to the time and the amount of chemicals involved. If it is done, the cost is expensive.
For those gals who do something with their hair, time and patience is an issue.
Long hair clogs the drains, so a plumber has to come out if the woman or the husband/partner/boyfriend don't snake the drain regularly.
Head aches occur often. With all the hair weight constantly pulling on the head, women with long hair are prone to frequent head aches.
The embarrassment of getting hair caught in doors, windows, and snagging on anything in general.
Going to bed can be a chore, since the hair has to be put up or out of the way. One gal told me about one time she didn't put her hair up before bed and woke up to find her own hair strangling her.
So if the husband/boyfriend/partner prefers that the women keeps her hair long, he better help with the brushing and other hair maintenance. But seriously, if the woman just gets tired of all the hassle, she should be able to have it cut without the guy being a jerk. He needs to take a step back and understand it from her point of view. If she doesn't run away if he finds himself balding one day, why should he act badly if she wants a haircut?
Sure, long hair can be nice to have, but BOTH people need to spend time and money caring for it.