Nowadays there is harder to buy a good old USB2 drive than nasty USB3 one. I do not see any pros of latter, only cons:
I can not use it for reinstalling OS, my old computer doesn't see them in BIOS
I can not use it in car, my old multimedia system doesn't see them
Their writing speed never exceeds 30MBps which is an upper limit of USB2
What is the reason of abandoning USB2 standard if USB3 is not that backwards-compatible as new versions of PCI/SATA for example?
Trust me your use cases touch me, but the world is moving on.