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Everyone certainly decides for themselves the percentage of their
BTC and other wealth in their possession. The psychological phase of maintenance is different for each person (HODLer), but I think there is an average value and at the moment it is about $2500-$3000. That doesn't mean that if
BTC costs $1 or $100 tomorrow, no one will buy it. This means that none of the HODLers will sell their
BTC for $2500-$3000 and store them further.
I find your placement of a current BTC value (at $2,500-$3,000) to be somewhat random seeming and quite presumptuous, but perhaps such value placement behavior is no more egregious than some the charts that attempt to show where the BTC price is going based on current value projections.
I don't think any of the HODLers will live on the street or (God forbid) starve instead of selling 0.002% of their BTC, or tolerate something like that.
You are taking my example to an extreme.
All I was suggesting is that there are various stages in which BTC HODLers should be attempting to plan their finances and to attempt to figure out what kind of stage they are in and to coordinate their behaviors, as much as they can, to what stage they are in. Of course, you are going to see the world much differently if you are in your teens or twenties, and have never really been able to accumulate much capital, so in those kinds of circumstances, it may take you quite a bit of BTC accumulation before you are able to feel that you are benefitting in concrete ways from the price going up.
I tried to suggest some level of precision in how much BTC would be adequate, and that is if you feel that you can live reasonably well off of cashing out 4% of your BTC every year as a passive income. Some of us could already be close to that stage, so your earlier statement about never selling BTC, just seems unrealistic and perhaps only seeing the matter from someone who his having trouble seeing the end of the line of the accumulation phase (nothing wrong with that, each of us are in different stages and in even different proportionality within that stage because (hopefully) of our own customization of our plans and BTC accumulation to ourselves).
And even if the price of BTC doesn't grow exponentially (which is very doubtful for me), BTC will still remain a reliable tool for saving!
I cannot disagree with you on that point; however, let me reiterate one more time. Let's say that your personal goal was to have BTC to occupy about 10% to 25% of your various personal investments, yet between 2015 and 2017, BTC prices went up so much that your BTC holdings began to approach more than 95% of your wealth, and even with the price drop, BTC value remains in a kind of 50% arena, which is way more than you had wanted to allocate to bitcoin. If the BTC price goes up again, then you might feel some desire to sell some of it off, even if it is a good investment overall.. and even if it does not go up a lot, with the passage of time, you still might feel as if it does not hurt to shave some of your profits from your BTC, here and there... just so you can have various comforts in your life (before you die or become disabled).