Yes, i am an MMA fan. I became interested in it when i stared watching the first Ultimate Fighter season.
And no, whenever you see any ground game, you don't have to turn off the TV because "EWWW, I DONT WANT TO CATCH THE GAY". If you honestly do this, you may be even more insecure about your sexuality than ever before.
There is a lot more going on in ground game than you might know. Yes, it's boring if the ENTIRE match is just two people on the floor, but when it isn't, consider this: attempted submissions, constant punching, kneeing, kicking, all wear out the fighters, how much it wears them out varies on each person and training.
The more they are tired out, the more susceptible they are to anything being thrown at them. Which means those oh so lovely knockouts of the night you are expecting. It's not always this way, because this isn't exactly a computer game, nor is it just fake entertainment wrestling, where it's wrestlers trying to make everything LOOK good, yet they have already decided beforehand how it will end.