> The floppy disk stopped being good at moving files between computers and making backups because single files of popular types regularly exceeded its capacity at the time it stopped being a standard feature. Modems and CD drives had fallen into disuse in favor of alternatives by the time they started getting left out.
There were still people who had stuff on floppies who wanted floppy drives.
There was a big fuss when Apple first removed CD drives from their laptops.
> The analog headphone jack still does as good a job of connecting headphones, speakers and such in a practical sense as it always did.
Many people -- I'm not claiming it's the majority -- disagree. Many people find headphone cables a big pain in the ass.
> While bluetooth headphones exist and enjoy some popularity, most people I know own, and regularly use wired headphones.
At least part of that is that wireless headphones tend to be expensive and many of them aren't the best at pairing and staying connected. Those things aren't inherent to wireless technology and will change over time.
> Yes, they also usually have bluetooth, but getting a car and a phone to pair, and getting the right phone to be paired at the right time isn't always a good UX.
Again, that's nothing inherent to wireless. Apparently the Apple wireless pairing works pretty perfectly.