USB-A right now:
1. My keyboard
2. My mouse
3. My webcam
4. My headset
5. My BT Dongle (which my BT headset won't actually pair with, thus #4)
6. Wi-Fi adapter
7. Xbox 360 controller
Now that is my desktop, my laptop is USB-C, with a dock plugged into the port. Said dock only has 2 USB devices plugged in, wireless adapter for my Mouse/Keyboard, and my headset.
None of this counts the many USB-A charging cables. I have USB-A to Lightning, USB-A to Micro, and USB-A to USB-C, all currently in use. I also have a single USB-C to USB-C adapter.
I too have an external audio interface, a printer, scanner, and external HDD, and they are all connected via USB cables that have a type-C connector at one end and the relevant B subtype at the other. These are now cheap and ubiquitous. My keyboard is lightning to USB-C, and my mouse is bluetooth. As for flash drives, I buy the double-ended ones these days.
The adapters I still use are for an older U2F dongle that is physically integrated into a type-A connector, which is due for retirement later this year, and a Thunderbolt display.
So the writing isn't just on the wall for USB Type-A connectors in my household, they're basically gone.
As for what happens to all the cables with type-A connectors that shipped by default, those are in my travel kit for device charging off wall-warts or vehicles that often still have type-A sockets.