"HODL" started as a typo on a Bitcoin forum in 2013. It has since become religious doctrine. Markets go up over time. If you sell, you might miss the move. Just hold. Taxes are lower. You avoid timing the market. You win.
This ignores whose money is being held, when they bought, and what their life looks like outside the chart.
Alice buys $10k of Bitcoin at $20k in 2020. Bob buys $10k at $60k in 2021 near the peak. Both are told to "HODL." Two years later Bitcoin is $30k. Alice is up 50%. Bob is down 50%—a $5,000 loss representing three months of post-tax income.
The crypto community selectively celebrates winners. Every keynote shows the log chart from 2010 to today. No one puts Bob on stage.
HODLing is not free. During 2018–2020, Bitcoin went from $20k to $3,200 and flatlined for months. You did not just lose 85% on paper. You lost the option to deploy capital elsewhere: into a business, education, or different appreciating assets.
HODLing is not a strategy. It is a default setting for people who do not have one. Treat crypto as a speculative allocation, not a savings account. Have the courage to sell when your rules say you should.