I generally don't throw out the physical paperwork until I no longer have the item.
Also by keeping a copy in the cloud it's easy to reference from almost anywhere. For example while I have the physical owner's manual in the car's glove compartment I find it easier to access on my smartphone and easier to find the procedure every time I need to change the time on the car's clock.
Yup. Good point. I do that too. That was good for a tidy sum in the LCD class action. I couldn't find the paperwork for some older LCD monitors and notebook PCs that I'd bought in the 1990s. But the photos I'd kept of the makes, models and serials on the back of each unit were enough to qualify them all.In addition, where relevant, I save a photo of a serial number/model number label, etc.
veni, vidi, Visa