I’m 40; mine is mid-back. I get it colored and highlighted, too. It is one thing about my looks that is easy to keep up, so there you have it.
I’m 59 and my hair is longer than its ever been, just below my shoulder blades. I hate it, but I just haven’t found anyone around here to cut it. Its baby fine and stick straight, except for a cowlick off center in the back. I have a proportionally small head (how do I hold all this stuff in my itty bitty head)
It shouldn’t be that hard, but Every time I get it cut it ends up looking like someone stuck a bowl on my head, making me look like Beetlejuice at the end off the movie.
My husband loves it long, so be it. I’ll stop looking for someone to trust with my head.
You mean the ex redheads that are now mauveheads? :dubious: handsome, I’d say 
I hack a couple of inches off of mine every time it gets long enough that accidentally sitting on it becomes a problem. Coincidentally, this also keeps it fairly even with minimal splitting.
Of course, I’m not quite 21, so I don’t think I’m officially too old for my hair yet.
I’m talkin’ about shades of brown that never occur in nature. At the last place I worked, we had a customer who was in his late 70s. His hair was a shiny ultra-black. His hair could bend light it was so dark. Not a non-black hair to be seen. Except in his eyebrows, which were solid white.
For Halloween many moons ago, I dyed my hair black (I went out as Elvis). My friend (who was a hair stylist) did the dye job. Her hair was black (she’s Korean) and my hair was much blacker than hers. She said dyeing hair is almost an art form. There are just some shades that are hard to duplicate (this was about 15 years ago and I’m dye technology has changed).
That reminds me of an old teacher. Remember the “surf” hairstyle in the 80’s? Well, my grade 5 teacher’s hair looked exactly like that for about 6 years (she went on to teach gym at my old highschool). Then one day, she walked in with a new style - cut even shorter, so short that it was one step above a crew cut. Instead of spiking it (which would have looked much better), she had it plastered flat to her head. It looked like someone had pushed it down with their hands covered in Crisco. It was awful.
My hair is waist length, dark brown with some grey mixed in. I generally wear it down, with the right side caught up in whatever barrette amuses me after I brush it in the morning.
A week ago, an elderly woman standing in front of me at the grocery-store check-out line told me that I had beauuutiful hair. I thanked her, but noted that long hair was pure laziness on my part: no appointments to keep (I just cut it if it gets too long) and it’s wash-n-wear.
She warned me that, once I tured 40, “they” would tell me that I had to cut it off – but added that she hoped I wouldn’t.
I thanked her more sincerely. I’m 51.
My grandmother started bugging me about cutting my long hair soon after I married (at 27), and would not let me alone about it after I had my first child. This demand felt like some sort of feudal ritual or something. I cheerfully ignored her.
When I did begin wearing my hair shorter a good 15 years later, it was my own decision–and it felt good.