A thought experiment i wanted to know.
I have saved it in a disc (was inspired by satoshi who stated it that he has saved it and buried it)
memorised and saved in hdd in air gapped though!
i'm a MacBook user, i store my private key wallet in the SSD.... i know it's not very secure but i don't have a lot of Bitcoins that i hold so i'm not really worried, maybe when i have a lot of assets (Bitcoin), i'll move it to a hardware wallet like trezor.