Yeah, making “just buy it because I can return it” the default way we buy lots of things is not good. Hell, I look at it as a “my time is valuable” issue, so packing up and returning something is a last resort for that reason. Like you, I tend to research a lot in advance, especially if it’s a sizable$ purchase. As an example, I guarantee you when I’m buying a new car, I know more about the vehicle than the salesman at the dealership, but that only covers what’s “on paper”, so I’m still going to test drive it.
I probably miss Radio Shack more than most. It was a decent part time job while in college, but I was into electronics since I was a teenager. There was no “Amazon” or anything of consequence online so if I was looking for a transistor, resistor, IC, cables/wires, boards, project cases of anything of the sort, “Dad, can you give me a ride to Radio Shack?”😁 There were other places you could get that stuff, but it was usually mail order from a printed catalog. Getting parts from Radio Shack cost more but, you know, “instant gratification.”