TLDR: write your wallet passphrase on a piece of paper, don't rely on only electronic means.
Which wallet were you using? I feel that's a critical part of your warning here. The reason is because every single hardware wallet explicitly recommends writing your passphrase down on something not electronic (except yours, apparently).
So if you want to keep people from committing the same mistake, please share which one wallet doesn't provide this explicit warning.
Official LISK online wallet at
https://login.lisk.io/It doesn't explicitly tell to write it down, just to keep it safe. I should have known better, can only blame myself
I actually hate it that things like this are "good advice" now. Things like this should be common knowledge. Saving your passphrase on your computer or even your mobile device, especially saving them on Microsoft Word, Notepad, or similar un-encrypted programs are pretty much handing over your cryptocurrencies to hackers. I mean, it only takes a minute to write the seed on paper. How could people be so lazy? We're talking about money here. I couldn't count how much people I've seen on Facebook groups complaining that they got hacked and stuff.
I'm sure they are common knowlege. Even I knew better, and I've been only at this (cryptos) for a month. I forgot to write it down, and that five-minute window was all that was needed for a catastrophy. I missed it by literally a second.
Nevertheless, it takes quite a bit of research to learn how to buy and store your BTC. Just see how many threads there are on which type of wallet to use. If we expect cryptos to become mainstream, there have to be huge improvements in user experience.