For us humans, no number is sufficient. So it’s clear that no one can give you an exact number that, how many Bitcoins are sufficient. The thing that matters is that, how you gonna spend your retirement life. If you want to spend the life luxuriously , then definitely you shouldn’t stop accumulating the Bitcoins. If I suggest you, the you shouldn’t ask for a number. You should invest at least 30% of your earnings regularly till you retire. I hope the amount you will get till 2032 will be sufficient then only.

We should accumulate according to each person's ability and need, but the more money the happier. Whether you live in a developed country or in a third world, the more money you have, the more comfortable your life will be. You are right that only your leftovers or cold money should be used to buy bitcoins in retirement, but don't put it all into bitcoin because we still don't know what will happen to bitcoin in the future. Diversify other assets to secure your future.

That's a fair amount to hold and if someone has that at the moment and keep on holding them, they can retire early to escape the 9-5 struggle. Let say you hold for a next 2 bull run and by then Bitcoin is now trading at $300k and Ethereum at $30k, that means you're 10 Bitcoin and 100 ETH will be worth $3m in Bitcoin and and $3m as well Ethereum.
That means you'll be having a combined total of $6m which is quite a lot, you're become a Millionaire and you can retire from your 9-5 to focus fully on investing and living like everyday is a vacation. Retiring means you'll stop working. Never think retiring means you'll stop investing as the moment you stop, you'll go broke like everyone else.
Two extra bullrun are 8 years cycle so it fits into your ten years plans for retirement which means if you own those now, you can retire in 10 years time presuming the market keeps on increasing.

was a good plan haha

This is great if you actually invested that large in bitcoin and ETH as of the time you made this thread last year; then you should be in massive profit by now. Talk more of if you hold it for years to come; it's really a big move and decision to use part of retirement funds to invest in digital currency that has a future from that time till now. If my calculation is correct, you should be in 3X profit by now based on the price then and the current price now.