Actually, it is a justification. That's why a bulti-million dollar company is releasing a macbook with no usb 2 port. Just because a certain demographic would make use of such a port, a large demographic wouldn't. Plus, they are looking into the future. For every year that passes, people will use less and less physical media.
As for your ethernet example, that's too bad. Wifi capabilities will get better for every year that passes, too.
> As for your ethernet example, that's too bad. Wifi capabilities will get better for every year that passes, too.
I beg to differ. I've gone from 802.11g to n to ac and I've yet to see any noticeable gains bringing me even close to plain old Gigabit ethernet.
It cannot compete nor compare when it comes down to even individual aspects: reliability, individual throughput, total throughput (due to shared medium access), nor setup speeds.
I'm not just talking "a little bit slower". I'm talking 1 minute guaranteed to succeed (ethernet), vs 1 hour guaranteed to fail (wifi). In real world performance, it's orders of magnitudes slower. That's measurable. That's a fact.
For lots of use-cases wifi is utterly useless. Have fun trying to backup media to a iSCSI volume over wifi for instance.
I'm guessing you don't live in a heavily populated area where the wifi-bands are over-consumed and have little more effective BW than 25mbps to offer. The same crap I was promised would improve half a decade ago. It haven't.
A huge part of the tech-hungry power-users lives in these places and suffers through this subpar performance. We're not happy with mediocre wifi to cover our needs.
As for your ethernet example, that's too bad. Wifi capabilities will get better for every year that passes, too.