When I first watched it, I disliked it a lot. At the time I was very religious (let's just keep it generic in saying that) and R&M say offensive stuff. It was hard to enjoy and be religious at the same time.

But that was years ago. I'm not that way now, and I honestly see the futility in many aspects of existence. I no longer place much value on any individual's "life plan/purpose" as I see no indicator we're designed. So it's not nihilism mind you, but I focus on the absurdity of it all. As in, life is pretty dumb and unpleasant to experience at the basic level. Yeah "you" can "enjoy" it insofar as you have a body you call your own and have senses that like certain things....but ultimately, it's very much nothing of anything.

I think Rick & Morty touches on those kind of topics frequently, in a dark humor, gross out way. Yeah, it's not the best show ever and isn't perfect in delivery of messages each time, but it's a thinking person's show I would say.

So, if I had to take a guess about your camps of friends, the ones who dislike it very much enjoy their life, sense-of-self and may even be quite religious (though not necessarily).