For some reason it is very appealing to the listener, and I think it's a combination of sonic qualities but also relief from repetition. And this is what's lacking from a lot of today's music.
Today we have what amounts to a loop where someone presses Play, mumbles over it for a period of time, and then presses Stop. There's no payoff.
I think one of first times I thought about this was listening to "Crazy in Love" by Beyonce. It has this big build-up that you think is going to go into a satisfying chorus... but it goes nowhere. Nowhere, for the whole song.
And that song is fairly dynamic by today's standards.