If you were with your boyfriend, say in a car, kissing pationately, and your arms were all over each other, and if you really loved him and were into the whole kissing thing you'd get wet too. And you'd be ready for a quickie.
Some women get wet really easy - within a minute or two of kissing, so there's no need for lubrication. They say that with age this ability to get wet quickly diminishes (like when a woman reaches menopause).

I find that the only difference is how confident and relaxed the woman is (and I'd venture a guess that a lot of man and women in the modern western world are neither confident nor relaxed, but that's another story). I don't believe in any "biological" or "genetic" difference in that respect.

Foreplay is very important to ensure that both the man and the woman enjoy sex fully.

As for "quickies" --- they have their place in a loving relationship and can be fun. If you want one then buy a lubricant like KY Gel so you can just get on with it when you want to.

As for is there a kind of woman who is easily lubricated -- yes there is. My lady gets wet when I kiss her so is always ready. That does not mean though that we don't play before I penetrate. Playing adds and hightens the pleasure.

Have him bring you to cllmax by stimulating your G spot and clitoris before penetration occurs.