I used to think that there were more bisexual women than bisexual men. I would've thought the bisexual men were few and far between, because my logic had been, as a man, how could you really like both sexually.
Then as i became bisexual myself, after being homophobic for practically a half century, I began to see things a lot differently. As i fell into the sexless marriage club, I began to see just how vast that club is. And just how many men turned bisexual once they were in it. It makes me really wanna tip my hat to all the mature women who still maintain a sex drive, or at least strive to continue to sexually please their husbands, despite losing their drive post menopause.
Men will always be perpetually horny, aside from the ones who had low or no sex drive to begin with.
The more acceptance and openness for same sex men to have events such as pool parties opens the door for bisexual men to be a part of it and meet others. And then there are the websites too. And then there are the widowers who, for various reasons, just stick with other men once their spouses have passed. And then there are also those who get divorced, and then opt for fun with other men, because it's simpler than a complicated relationship with a woman all over again .
I don't know that similar circumstances occur with women. I really haven't looked into it, nor been exposed to it. But I have become aware of all these different avenues of bisexual men.