I got into MMA through my spouse, so I'm stuck watching most cards whether I want to or not. My wife edits footage for the UFC sometimes and used to hit the road with the crew for Embedded. She's met Bisping, Saint Preux, all kinds of fighters, and has some pretty strong opinions on not only the sport but fighter personalities as well.
The fight that really got me into UFC was Lawler/MacDonald 2. Who wouldn't want to keep watching after that? TJ/Barao 2 was another. The UFC has fallen off a bit even since 2015, but I persist because of my favorites (TJ, DC, Joanna, Khabib, etc.)
It's a great sport but a disgusting league run by a craven cue ball who thinks it's cool to cut footage of fighters being physically and mentally scarred into promo material.