One of my favorite movies ever was Bloodsport. I was fascinated by the idea of "style vs style." So to see it in real life was fascinating. I loved watching the different uniforms. I loved watching the different stances. And I was blown away by how quickly a fight between two well practiced martial artists would devolve into a brawl or street fight. And the cherry on top was witnessing a new martial art that I had never heard of. Brazilian jiu jitsu. And watching this skinny guy basically beat everyone with a scientific approach to street fighting was just mind blowing.
I've been hooked ever since. I love style vs style match ups even now. Granted most guys are well rounded, but you still have stylistic matches between different striking styles vs different grappling styles vs different paces and strategies.
I still miss 12-6 elbows, stomps, and soccer kicks though. The UFC would be a different world with soccer kicks.