[throwaway420]

I think most people will have an intense emotional reaction to this point and suspect that you're either trolling or delusional. I don't think you are, but I think you're presenting a weak argument (that contains a few valid observations) in a poor way.

Maybe current SSDs are a little faster and maybe current CPUs are a bit better, but logically speaking, you're technically right that there's an argument to be made that most people won't notice a significant difference (if any at all) in performance today with an update if they already have a reasonably new machine.

The counterpoint to that logical point is that this won't necessarily be the case a year or three from now. Requirements eventually go up, things such as VR emerge that require a big performance increase. New OS-level technologies are released that take better advantage of things like more RAM, CPU cores, graphics cards, etc.

But really, you're ignoring the human and emotional aspect to this. People feel like crap when they buy something and the new model is released a couple weeks later. When people are paying that much money for a machine, they're expecting to get the latest and greatest that will last them as long as possible. I don't think it's hard to understand.