I'd like to believe it's an intentional effort to satiate the crowd's thirst for blood.
Well, every regional promotion's booker has their own version of Gary Goodridge on their speed dial. For better or for worse. But 90% of the time it's a case of "Oh shit. Can you fight on <date>!?! Please say you can fight on <date>!!"
Asian cards in particular suffer from this. You have a handful of decent fighters who could make it to Bellator, a truckload of debutants, a bunch of shitty 3-7s that need recycled and maybe - just maybe - 1 dude who could make it to the UFC.
When you generally look at an events results of 10 fights, and one card is nothing but round 1 finishes, and the other card is 10 decisions... what looks like the better card with a quick glance?
I love great fights, we all do, but we all love squash matches too, don't kid yourself. The great fighters get great fighting anyone, and when they're on top, the super fights never happen because these bums never want to fight anyone that they might lose again.
When fights go to a decision, two things spring to mind:
A) One or both fighters lacked the decisiveness needed to finish either due to fatigue, lack of skill/conditioning, or just general unwillingness.
B) The fighters are too high-level and too conditioned to be finished.
A is obviously a shit match. B will probably be fight of the night.
But as with any sport that allows for draws/judging, only proper fans of the sport will appreciate (B) fully. Just like only fans of soccer will fully appreciate a high-octane 0-0 match.