Being trapped in nostalgia is good if we just want to see the price journey rather than seeing and comparing whether the price used to be cheap and now expensive. It is common where the market will always fluctuate but once again it is not an obstacle if the initial ideal comes to continue accumulating BTC and this is also caused by the desire to get more BTC where our position still feels insufficient to continue adding and owning these potential assets but if it is felt to be enough that is another version.
The current price can be anything - 100k or 500k.
The reason we need to be certain is due to how Bitcoin grows adoption-wise each year / cycle and because of that, becomes more and more acknowledged + valued throughout the world.
Once this thought clicks - it's obvious why anybody can buy it whenever he pleases.