Why is there no love for Prima Luna?

Good equipment....requires the right speakers to pair with it, like anything.  I have had great (Scansonic) and bad (B&W 805) experiences with PrimaLuna .  I think they market themselves as amps that border on bulletproof and can work with any speaker (within reason) and my experience is that is far from the truth.  They behave like any modestly priced tube amps which is amazing with speakers that have the right impedance curve and poorly with speakers that are a challenge to drive.  

That being said, I am 100% certain made-in-china is a ding against them.  Lot's of folks would rather support western brands.  Roll those two things together...you get a group of people that love them and a group that really doesn't.  

I read many good things about them when I was doing research about this for my system. I'm not sure what you're seeing, but one other way to gauge gear is how often it's put up for sale, used. Some gear is very hard to find used, while other stuff is always available. Part of that can be attributed to the overall volume sold, but in some cases, it reflects dissatisfaction which emerges down the road. In other words, another way to pose your question would be, "How do people explain why they give up PL, and what do they trade up for?"

I know guy who bought one at a dealer shop and then sold it shortly after.  He had more difficult load speakers not designed to work best with tube amps.  So it was just a system mismatch nothing wrong with the amp itself.

I think many people just fall in love with tube amps and end up with mismatched systems.   Primaluna seems to have good distribution in the US and offers good value so I think there are more cases with those mainly because there are more of those out there than most tube amps.

No love?
No basis for that.
Maybe not enough love for you.
Too bad.

For made in China the Line Magnetic amps are far superior and a better value in my experience.