To trim, or not to trim, that is the question

 Don't ask a hairdresser or someone who is not used to extremely long hair if you need a trim. According to such people, you need a trim. They don't know anything about taper.

Everyday we lose a lot of hair but we also grow new strands everyday. Your hair can seem thicker and fuller at the top because of new hair growing that hasn't reached the length of the rest of your hair yet. The stands taper in at the bottom because as it begins to grow it comes out of the follicle finer and gets bigger as it grows, so the thin ends are hair that hasn't been cut and left to grow naturally.

(Show before and after photos!) 

Losing volume on the crown is another factor. People hate to see scalp or oily hair. They don't know about wigs vs hairloss vs hair pattern. Of course straigh hair will let your scalp and cowlicks show. It's logical. Hair lays straight down, hence why people confuse hair pattern with thickness and density. Wavy, curly and natural hair create volume on the crown and people instantly think that kind of hair must be thick. It's simply logical. Unfortunately a small bun doesn't mean your hair is thin, it means your hair is compressible.

Severe buns and ponytails are a no-no for our society's demands. Half of your hair must flow in the wind but never stick to your face, which is an unrealistic expectations if you ask me.

In the long hair community we schedule our trims:

• monthly microtrims: quarter to half an inch monthly trim, if you want to mentain your hemline, grow out layers, give your hair length a shape or simply don't want to grow your hair longer.
• microtrimming and growing: yes, it's possible. I did this and I grew my hair out. insert photos with getting rid of layers and fairytale ends (if possible) I cut my hair less than 2-3 mm (cca. 0.05 inch) per month or every two months for a year long or a half a year. Unfortunatelly you can feel like you don't make any progress of getting rid of your layers and your hair ends up looking raggy.
• regular trims: this thread says it all. Hairdressers don't know how to handle hair that is longer than waist length. Of course hair at longer lengths becomes finer, thinner, dryer (because your scalp sebum doesn't reach that far and it needs extra moisture) but hair that doesn't look in a fashionable way doesn't need to be cut either. just know the difference between dryness and split ends and stop styling your hair with products and messy buns. You'll be good.

Look into traditional hairstyles: anything from Korean or the LHC or any other long haired blogger or vlogger.