If OTG is enabled, I can take both X3 and a battery-powered portable 2TB drive in my jean pockets and listen while I walk. Can you do that with a computer?
You cannot say it is not justifiable only because you don't need that function. please read the previous 2-3 pages and count how many senior Headfiers want OTG.
And thank you editing out your original post, as it was not quite civil to call "stupid" Your post reads much better now.