Your wet bio brain as sole backup for your mnemonic recovery words or other secrets is plain irresponsible, period!
I'm an old fart and had my share of forgetting e.g. wallet encryption passphrases (fortunately so far only for value-less Testnet coins). But that taught me a lesson, even when I was almost 100% sure I knew how I "constructed" the encryption passphrase. After some time, I couldn't figure it out anymore and I was careless to not write it down properly or lost the note.
I was lucky, it didn't happen so far for me with precious real Mainnet bitcoins. Lesson learned, I document everything thoroughly (well, mostly, I hope, giggle).
Well, I didn't pull all strings to try to brute-force it by clues I know, but that's not guaranteed to succeed and not the point here.
You can forget everything, it's just a matter of time and little use or how hard your head gets hit or whatever may trigger severe amnesia (illness, drugs, ...).
I'm an old fart and had my share of forgetting e.g. wallet encryption passphrases (fortunately so far only for value-less Testnet coins). But that taught me a lesson, even when I was almost 100% sure I knew how I "constructed" the encryption passphrase. After some time, I couldn't figure it out anymore and I was careless to not write it down properly or lost the note.
I was lucky, it didn't happen so far for me with precious real Mainnet bitcoins. Lesson learned, I document everything thoroughly (well, mostly, I hope, giggle).
Well, I didn't pull all strings to try to brute-force it by clues I know, but that's not guaranteed to succeed and not the point here.
You can forget everything, it's just a matter of time and little use or how hard your head gets hit or whatever may trigger severe amnesia (illness, drugs, ...).