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Point being, selling bitcoin for dollars seems counterproductive.
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That graphic explains your point well. More so for people that have actually seen the movie.
I do see your point. However there is danger in leaving everything in one asset class. BTC could rise rapidly to high levels and then later crash to 0. Total loss could have been avoided by selling some BTC or trading it for another asset class when prices were high.
Its not all or nothing. You can sell some of your BTC and keep the rest
I agree with the fact one should hold literally forever. The thing is, big bubbles happen and the opportunity to x5 your BTC by selling on a peak is always there.. but who wants to risk it? you not only need to nail it when selling at a peak, you need to nail it when buying back on a correction.