Lol my friend and colleague at work are like this. I love boxing, he loves MMA. We're always just selling points to each other about our favourite sports. It gets funny because he'll be sitting down doing admin and I'll start jabbing him in the head and giving him soft body shots to piss him off. He'll wait for me to sit down to do my admin and put me in some ridiculous choke hold. We've even gone as far as agree to a sparring match where I will box and he will 'MMA' lol

I personally hate MMA and find it boring but I have a lot of respect for my friend who loves it. He has had me watch video's and explained it to me. While I do take in his points, it's just not my cup of tea. However he is a very intelligent guy so it is obviously dependent on what your tastes are. Its not the case that MMA fans are all blood-hungry thicko's.