Same, but no reason you can't do both and watching helps improve your own game!
I only watch soccer for the world cup or whatever. Root for croatia and mexico, obviously US too if they're in it. Don't know much about it though lol, soccer and basketball were 2 big ones that never interested me. I'll play anything though.
Not familiar with kenpo karate, but black belts are a feat! Good luck with that! I think MMA fighting is the most impressive thing someone can do as far as sports competition go. The ability to put together different arts to perfect fighting is so cool to me. Bruce lee was one of the original people to do that rather than sticking to one style.
I did muay thai, boxing, *little* wrestling and BJJ for a few years. I wanted to do some amateur fights, but my body couldn't hold up... 3 surgeries... also have breathing troubles so I gassed quickly. My brothers are both very good boxers and my one could go pro and teaches classes.
Football is a ton of fun, dunno how I feel about my kids playing with the brain damage, but I'd let them do what they want.