I carefully followed your conversation from the previous page and tbh, it's very interesting. There are factors you guys pointed out and I would want to highlight them again;
- BTC investment as a retirement plan
- Emergency fund
- DCA
- Liquidation of investment
- Duration of investment
Emergency funds is a must;
You shouldn't investment with money for your daily upkeep.
Emergencies can come anytime and to be well-prepared, we need to reserve part of our money in emergency fund which can be used anytime when we have urgent needs.
DCA is meaningful when it doesn't stress the investor and the investor remains consistent;
DCA is a good accumulation and investment strategy because it does not require people who use this strategy doing either finding market tops, market bottoms, perfect times for entries and profit withdrawals.
This strategy eliminates or minimizes effects from human emotion, then is able to maximize profit while minimize risk and loss especially if applied with investment in a very good asset like Bitcoin.
After some years of investment, selling little BTC doesn't liquidate the investor. What is life if you can't sell a bit from your investment?
Profit taking from your investment portfolio, do proactively by you, is never considered as liquidation. Liquidation is passively unwanted selling by exchanges, not by yourself. It's forced liquidations by exchanges, to be more precise.
Someone investigating for retirement should do that with a different untouchable wallet.
Diversify that fund into different wallets: cold wallets, and backups on air-gapped devices too.
For long term investment, I'll recommend min 8 to 10 years;
Let's make your investment plan in Bitcoin market cycle so it should be either 8 years to 12 years. 5 years are like a safe holding time for profit of your investment portfolio according to
https://hodl.camp/