My opinion is well knowed. The point is the health and the thickness. The quantity. With good thickness I like long hair, but if is shorter I like it too.

If is really pretty, thick and healthy my limit is the waist. Longer it feels it uncomfortable and IMHO a mane too long lost movement. And the movement is also sexy. From mid back until waist is the perfect length. I'm not a fan of Rapunzels.

Of course there's exceptions like Anna-Lena (@my_fascinating_hair). She's (Repeat IMHO) the limit of length. And her hair is exceptionally good. Girls like Alex Arriaga are more attractive to me, 'cause they can sport her hair better.

Another point is if it's well cutted. A good haircut emphasizes movement and shape.

I don't like a lot of girls listed here with really long hair, but thin, or with poor ends. Always thick hair. But is my taste.