Re: 51000 tonnes?
I throw away many a year. There are 3 types: micro usb, usb-c and lightning.
A lightning cable rarely survives 5 minutes with a toddler. I confess that I don't have the ability to supervise a toddler 24/7, due to needing to do frivolous things like cook, have a shower or use the loo or even answer the door.