I like Case slip-joints just fine. I think they are a good value for their price point. They comprise probably 70% of my knife collection. Others I own and enjoy include Great Eastern Cutlery, Canal Street, Queen, Buck, and Schrade.
I have a few knives that don't fit into the traditional category (Spyderco, Kershaw, Boker, 70s-80s era Gerber) that I don't discuss here but that's OK, there are other subforums for when I feel like reading about or discussing those.
I like traditional knives because they appeal to me aesthetically. I like the look and feel of the nickel silver bolsters, brass liners, and textured bone and stag handles. I even like the occasional synthetic handles like Delrin and acrylic. I don't really need a knife for any serious work, so pretty much anything meets my daily needs. In fact, a Victorinox Alox Cadet and a Boker non-traditional are my most often carried knives. Though most days a Case, Buck, or GEC knife goes along for the ride as well. Just because I like them and have enough pockets to carry more than one thing at a time.
I suppose it's just a matter of individual taste. When I first got interested in pocket knives a few years ago, I was trying lots of different brands and styles while I was dialing-in my tastes and preferences. I bought several Boker, Kershaw, and Spyderco knives. It was the Kershaw sub-forum (now closed) that brought me to Bladeforums in the first place. I looked in the "Traditionals" sub-forum and for a while couldn't quite figure out what it was about - so many brands and patterns and I wasn't sure what exactly was meant by "Traditional" in the first place - looked to me like it was all about antique knives and true collecting - meaning to me, rare knives in display cases.
But I stuck around and read the threads and discovered that Case knives were still currently made and produced and relatively affordable. So I picked up a few (again, in my journey of trying many things) and was immediately hooked. I don't know what makes a person prefer one thing over another, but the type of knife discussed in this forum is what I prefer.
I know there are people who avidly collect Spyderco knives, for example. I have one myself and love it. Great utilitarian knife, excellent ergonomics, top quality. I don't like the looks of it per se, and I haven't yet found a reason to buy another one. But I don't go over to the Spyderco forum and complain about why people there prefer knives with big holes in the blade. It's their preference. As I said, I have one, I appreciate the knife, and I can understand how a person could really get into all of their different patterns, steel choices, sizes, and variations in handle shapes and materials. It's not for me, but I can still understand it.
Not every little nook and cranny of the Internet is suited for everyone. If people here aren't talking about what you want, or if they are not sophisticated enough in their discourse to be worthy of your time, just move on and find someplace you enjoy more. There are plenty of other subforums here on BF where you might find topics of interest. Just keep in mind, if you get yourself banned, you get banned from the whole place.
Here are some pictures of my first Case slip-joint knives:
Peanut:
Sway Back Jack:
Small Texas Jack:
At the time as you can see I seemed to be into small to medium two-blade jack knife patterns but have since expanded my horizons a bit.
Here is my most recent knife, a Great Eastern Cutlery Dixie Stockman:
This is a nice example of a Buck traditional pattern, the 301:
It's not all about Case.