The way your question is worded is a little trollish, but it does make a point.
Of course there is a following in women's sports, but it's almost insignificant compared to men's sports. For example, the WNBA can't even pay its own bills, but has to be subsidized by the NBA to continue to exist.
Since half the population is women, you'd think the numbers would be a little more equitable. Obviously the women are not as interested in their own sex's sports as the men are in theirs. In fact, I heard one female former high school soccer player say she'd rather watch the US men's soccer team play rather than the women, explaining that they are just better at the game, and thus more entertaining. Look at the numbers, there are probably many other women just like her.
I hope you get some answers to your question that address its root issue because I too am curious why women fans are what they are when it comes to women's sports. To avoid its appearance of trolling, may I suggest updating it with wording like this: Why do women sports nowhere near get the following of men's sports? And a followup question for the women would be: Should women in sports get paid the same as men in the same sport since they rarely if ever have the same entertainment or market value?