I don't think I have a strong preference either way. Most of my "old" friends (college, etc) are women but I have some guy friends, too; my grad school clique is 4 women/2 men.

I have close female friends but I gravitate more to men. My very best friend is my husband, hands down.

Both.

I tend to appreciate how people express their personhood without active genital or gender interference in our relationship. People who can't be intimate without making it sexual or dependent generally weed themselves out of real friendship, no matter what sex. Who has the time to role play if it isn't for fun or profit?

I definitely prefer being around women. I seek out the company of women, and I feel more comfortable around women. I have male friends, but not many. Most are the husbands of my female friends. I don't dislike men, I just find that I don't have as much in common with respect to my interests and hobbies, which tend to skew traditionally female (crafting, knitting, cooking).

As a younger person, I was often let down by men (boys, really) who would form friendships with me, but would quickly let the friendship die as soon as they realized I wasn't interested in a romantic or sexual relationship. That happened more times than I care to count. First I was disappointed and confused, but as I got older, I grew resigned. Ultimately, I was so suspicious of men's attempts at friendship, I withdrew from male company nearly altogether. When I met my husband, it was a miracle that I even spoke to him at all.
Now that I am older, it is such a relief to not be treated like that anymore. But I still prefer chicks as friends.

I now gravitate towards female friends since there is no "relationship" expectation and we can simply enjoy being friends.

I don't have a strong preference either way. When I was younger I found it a lot easier to be friends with men because we shared more interests and the communication was in some ways clearer to me. As I matured I found it just as easy to be friends with women. People vary a lot; as always, individual variations matter more than variations across a two-pole borderline.

As Miko said "People vary a lot; as always, individual variations matter more than variations across a two-pole borderline"
but most of the time I prefer to be with women and always most of my friends are women. I generally only have one or two close male friends.

I've always been more comfortable with women. For whatever reason, I've never felt at-ease among men.

My best friend is a man, but 95% of my other friends are women.

I agree that there are many variations and I don't deliberately seek friendship with any specific gender but I do seem to gravitate towards women as friends. My best friend is a woman and, while I don't have any friends that I'm very close with apart from her, I do tend to be more comfortable around women. I think it could be because I find the competitiveness and the typical male ego stuff uncomfortable.

Women, most men are too wired up or outwardly grouch.
At work; could care less.

pretty much the same as Thorzdad. the majority of my friends have been female since i can even remember. nothing to do with the genitals; i'm just not a fan of "maleness" or masculinity, or what it means in our society.

No preference but since I work in software I spend 90% of my time around men so hanging out with women is a nice change.