What do you care about in this hobby?

Educating myself about everything physics of sound 

And

Enjoying my media on my system whilst leaving room for discovery.

I’ve achieved the second one fully and I’m now reasonably knowledgeable in the first but still far from even being an amateur acoustician

Basically, all the above 

Sound quality first, aesthetics 2nd. Value only matters to me when 1. I can’t afford it anymore, and 2. clearcut cases of misplaced expense - i.e. obnoxiously bad engineering / design; ostentatious chassis; misguided product philosophy. 

The others categories matter to me about ZERO. Measurements can be a curiosity & fun read, but I treat them largely as a separate pursuit, with little overlap to listening.

For service and support - keep in mind so many hifi companies are "1-man shows", or close to it. Usually, the proprietor is OLD. What do you think the landscape is going to look like in 10+ years? The only service & support you can count on is having gear with (mostly) replaceable parts that can be reasonably worked on by other technicians. That, and get some spares for the parts that are hard to replace (drivers). You DEFINITELY want your key components to be known to known reliable units. I know my Tannoys are tough as nails because I've had several "oopsie" momemts with them over 15+ years, and they've come out unscathed. 

The Mystery. It's what keeps me interested.

The physics is known but perception is not.

@mapman - how are all 8 of them for you if the first one is 'Sound Quality Only'?

If we remove the 'Only' from that, for me, it would be 'Sound Quality', 'Overall Design', and 'Aesthetics'. The others come into play as well to some extent except for 'Measurements'; don't care much about those besides seeing what will drive what. 

1. Enjoyment.....

....which happens to put sound quality on a budget at a premium.  WAF and pleasing aesthetics never hurt.