Could never happen to me as have always kept a close eye on all my stashes, save the few faucet sites way back when I didn't know what I was doing or never had a wallet. I do often think back on all those dust -- back when minimum withdraws were still $10 or something and BTC wasn't even $1000. Pretty depressing fantasising.
I do have some alt wallets thrown out I'll never recover. Proper deleted and wiped HDD in a sordid spring cleaning exercise years ago. One or two make me shed a tear heh.
The point you said it could never happen to you got me laughing hard, like you are always keeping a close eye on them. It’s necessary you do so for fear of losing out, because it’s almost like a risk, forgetting or abandoning your wallets. I do love the way the whole system was configured, you get to re-access an app, an account or wallet after so long. Kudos to technology, Kudos to Crypto.
In all and in general, I advise everyone to find safer places to store their key phrases, screenshots are not mostly reliable on, because such backups could fail in most cases!
Yeah, I really can't see myself getting a new wallet and getting BTC into it and then forgetting about it. Not in 2016, and surely not now...
I also don't keep much balances in services (casinos generally, sportsbooks... Exchanges not anything for more than a few hours) so even if I might forget about them, or they die, no way I stumble upon those in future. Not my keys, and all that.
Screenshots? Gives me an idea actually. Obscure a couple, or leave out, but yeah maybe one other way. Wallpaper it (physically) ha ha.