Yes, I have seen many female mma fights, and some were good, some were ok. People want to see in fights, the things that fighting bring out of people, anger, brutality, but also heart, and mercifulness. It is dramatic, and exciting. Why do you think so many people on here talk about a gay ass Forrest and Rampage fight on the set of TUF. They want something dramatic to happen that distracts them from the monotony and dullness of their own lives. That is big ko's unexpected submissions, and injuries. Women's mma is like jr. high basketball and men's mma is like college football.
The worst injury I've seen in female mma was in bodog where that girl fell wrong on her leg and it snapped, and that wasn't exactly BJ Penn or Sakuraba technique. I might be quite different in my views of mma, because I train and I have competed and I understand what it takes to be a fighter, while most, almost all people have not a single clue as to what it takes to be an athlete. Would I rather watch Tara Larosa vs. another top female mma fighter than Fedor vs. Hong Man or Giant Silva, yes. Would the majority of mma fans, probably not. Could Tara vs. Roxane Modaferi or Jerrica Jack be a great fight, competive and exciting. Yes. Would it ever mean anything compared to Hendo vs. Silva or GSP Serra or BJ vs Sherk, absolutely not. I've never seen a girl who could remotely do anything like GSP, Silva, or BJ. I'm sure BJ and GSP couldn't do some of the things females can do, but those things have nothing to do with athletics.
Mcdonalds is popular because people are lazy, and stupid. The same way my parents are for eating 15 servings of chips and dip in a day, that cost 5 dollars or so, and complaining about being fat and tired all the time, when if they just had the resolve to cook the 25cent chicken breasts they've had in the freezer for months instead of doing what is easy, they might not be in the shape they're in (physically and financially).
Women's mma won't be popular with women because most women don't care about ahtletics. They care about Gucci bags and The Hills and shoes and makeup and gossip and being satisfied based on what they think they deserve just for being.
Women don't dream of being Tara Larosa for the most part, they might want to be tough like her, or famous, but not an athlete.
How many guys on here wish they were Randy or Chuck or Anderson Silva?
How many guys go to the mma gym where you train? How many women? How many guys watch Martha Stewart or whoever, how many women do? Part of it might be society and gender roles, but mostly it has to do with physical things, like hormones, muscle mass, bone density, spacial relations, reaction time, that all favor men and make men's mma more competitive and more exciting for the masses.