So basically you are saving if Bitcoin reaches 10,000 dollars it would be a bad idea to sell. I disagree with that. I am not saying sell every coin you have but it would be worth it to sell some of the coins. What if Bitcoin stays at $240 dollars for the rest of time, and you have 10,000BTC. It might not be a bad idea to sell some of those coins and make some actual fiat cash as well. What if Bitcoin crashes, then the best time to sell them would be now. There are plenty of times you should sell.
This reasoning may have value if you have big quantity of bitcoins. If you have few (for example 10 or 20 bitcoins) this kind of behavior is not possible. If i sell some of those with the actual price they don't give me to much. On the other hand I "lose" my bitcoins which I think could have much higher price in the future. I write "think" because are qualities of it which make me to hope that bitcoin might have a much higher price in the future).
I think it still works in small amounts. If I have 5 Bitcoins and the value reaches 10,000 dollars, I sell 2 of them for 20,000 dollars. I still have 3 in the bank technically. I don't think that is the worst thing in the world you could do, also could try investing those to make more or something like that.
If in example i have 5
BTC on my wallet, and surprisingly BTC price goes up to $10,000.
I would do a same things like leex1528,
i just sell some % of my BTC to trade it in another place like real estate or other to TopUp my insurance policy.
All people including me, will not think to always buy BTC without trade them back to another "valuable opportunity" in future.