That same puzzlement could be aimed at any hobby or enthusiast, all depending on one's own perspective.
To my wife cars are only a means to an end - getting from A to B. But obviously there are many car enthusiasts who think otherwise, and find reward in appreciating the cars themselves - hence car collectors, or even people who are so interested in how cars work, they work on building or altering cars themselves.
I see a watch as a means to an end - my cheap digital watch tells me time, so why would I spend time thinking about what other watch to buy? But...you have people really into watches who buy many, appreciating the charms of each different one. I have some friends who are fascinated with knives, and own all sorts of them. I have no idea what could be so interesting about knives, but there you go.
Same with audio hobbyists - some people just use audio gear as a way to listen to music; others are fascinated by the technology itself, try lots of different speakers, amps, learning about why
things work the way they do, sometimes getting into building their own speakers, amps etc. Why, when you can just go buy it from a store? Because that's the nature of the enthusiast. It's typically been a guy thing at least in the past - fascinated by understanding how the technology works, and playing with it. Though it may be an inaccurate stereotype in this day, there was the classic line about how women and men respond to technology, such as giving each a computer. The woman asks "what can this do for me?"
whereas the man asks "what can this DO?"
(That certainly describes my wife and me - give her in iPhone and she uses it minimally, calling, emailing - just things she already wanted to do and the phone helps her do it, whereas I'm like "what can I DO with this thing?" exploring everything it can do, pimping it out with every app, exploring its capabilities is just a pleasure in of itself).
So what I'm getting at is that there's nothing particularly "perverse" in many people being fascinated by technology in of itself, or as an adjunct to their using it to enjoy a medium. In fact it's often those who are so enthusiastic about understanding the technology of the normal "means to an end" bit of gear, who we can thank for later on designing advances in that technology - the people who were fascinated enough by the technology to say "How can this be better?."
People on this forum sit along a spectrum of technology enthusiasts - in fact, it's mostly seen as a gathering of
enthusiasts who are keen about the technology of AV gear, hence the name of the forum, right? Most of my friends couldn't conceive of even bothering spending their time thinking about the amount of technical geekery and interest in technology that went into my home theater build. But then, if I felt the same, I wouldn't have this wonderful home theater that I'm enjoying (and which my friends think is amazing - they just don't know why or how it got that way).
By the lights of the average consumer, also of the means-to-an-end point of view regarding display and audio technology, the time we at AVs spend thinking about our choices, learning about the technology and discussing it on a forum like this is "perverse," and that of course would include you, given all the time you devote here as well.
ETA: and as others have said, we can both seek to understand, appreciate and discuss the technology behind our choices, while also enjoying movies. I'm a life long fan of film, watching pretty much every single night, and if every couple years a new projector will make the images look even better and I can afford it, this hardly takes away from my enjoyment of movie watching.