My hair is starting to touch my shoulders and it is too long for me now.
I have had all lengths of hair in my adulthood, though, from about 1/4" all over to middle of my back. I prefer it this medium length, or possibly shorter. I don't see myself ever going back to hair below my shoulders.
1. It's too much trouble
and
2. I'm too old for long hair.
See how my decreasing patience level matches my increasing age? It's supposed to work that way.