Because the question was:
> What connector do you think you'll need in two years, five years, 10 years?
And my answers were USB-A, both, and USB-C (but probably also whatever replaces it), respectively.
Your response to my answer was to tell me that lots of host devices are shipping with USB-C, which has no effect whatsoever on my answer (which I expect is typical, even of people on HN). I thought you must not understand that a bunch of host devices supporting USB-C barely has any effect on what I'll be plugging into my computers for the next few years, since you responded that way, so I gave an (incomplete) list of my USB-A devices which will almost all still be working in 2 years, and most of them in 5, and also, incidentally, a complete list of my USB-C devices (none).
USB-A is hands-down the more useful port to me for the next few years. USB-C is a nice bonus for future-proofing but has zero immediate utility, and will still have little or none in 2 years. Just answering the question.