Actually have to do it: I see, but really, dear real user, you are adept at printing pages, you do it quickly and masterfully, just click the button now.
Remember where you put it: the answer is trivial and always the same, "your wallet". The tech support will remind you to look in your wallet if you come to them with your problem.
Yup - let me just go get my "wallet binder" from the storage yard I have to keep it in after adding 800 pages of backup codes (which is literally not an exaggeration - I have more than 800 active accounts between personal/work/contracting).
Let me just bind this fucking book over here, after I ran out of printer ink twice while printing it, and shove that right on into my little wallet flap.
Most people don't have printers on standby. Most wallets have lifetimes way shorter than those of account rescue codes. Everything else in a wallet - government-issued IDs, bank cards, etc. - has lifetimes way shorter than those of account rescue codes.
Remember where you put it: the answer is trivial and always the same, "your wallet". The tech support will remind you to look in your wallet if you come to them with your problem.