What hair length do you find most attractive on a woman?  My preference is cleavage/bra strap.  Is their an anthropological explanation for the preference for longer hair on women?

For hair length, I'm pretty flexible, but I'm not a fan of like, completely buzzed or touching their legs long, but anywhere in between those, I'm good.

For the anthropological question, there is actually a reason why many people prefer longer hair, and it has to do with health. See, back when our brains evolved, (and for many of us, got stuck,) many physical qualities were connected directly to our health, (head hair length, body hair, body fat, etc,) and, naturally, the healthiest woman had the bet chance of delivering a healthy child safely. Basically, it's natural caveman era instinct to look for health indicators.

Honestly, I don’t think it really matters how long a pregnant woman’s hair is to me personally. As long as they’re pregnant and they look hot, that’s enough for me.

There is definitely a primal natural selection element to the preference of women to have long hair. It has become the social standard in our culture in the same way men are expected to have short hair. Women who have extremely short haircuts are a turn off for me because short hair is normally associated with men. My favourite female hair length is the bob cut with bangs. I wish they had named that hairstyle something more feminine instead of "bob" but hey at least it looks like a female hairstyle. Dallas Howard was extremely sexy with it in the first Jurassic World movie.

I do not like shaved/trimmed head, otherwise as long as they take care of their hair and can style it I don’t care.

Hair length/hair style important to me, so if theres a pregnant woman who I already find to be really sexy, having right hair length/style can make a huge difference in the long run.

I try not to picky, but my preference is not too short or too long, like bottom of neck to just below the bottom of her breasts or down to her belly button.

Ultimately it depends on the woman. But if I had to pick a rough minimum: maybe just past their ears.

(January 5, 2022, 5:35 am)EdisKrad18 For the anthropological question, there is actually a reason why many people prefer longer hair, and it has to do with health. See, back when our brains evolved, (and for many of us, got stuck,) many physical qualities were connected directly to our health, (head hair length, body hair, body fat, etc,) and, naturally, the healthiest woman had the bet chance of delivering a healthy child safely. Basically, it's natural caveman era instinct to look for health indicators.

From a cultural view, there's also the fact that very long hair makes labor harder. It can't be as easily tied back and is often seen as a sign that one is wealthy and powerful enough to not have to work physically (ie. farming). There's a similar mentality regarding pale skin in asia and europe. 

I prefer longer hair myself, around mid-back length.

When you said “labor” I of course initially thought you meant childbirth

As long as it's not short (i.e - a typical man's length), I'm generally open minded. If I was to specify an 'ideal length', maybe just past the shoulder line/bottom of her neck... Something which she could tie into a reasonable length ponytail if she wanted to... 

Hair colour doesn't bother me at all. I'm happy with anything!