There is a power within compounding and exponentials... so if the BTC price is going up through the years, and maybe not very clearly over a few years, but over a cycle or two, you are able to see a kind of stablizing and building upon itself in such a way that after a certain passage of time, it becomes quite difficult to push the BTC price below certain price points.
With all the experiences you have shared, of course it is in accordance with what I said before, where
holding BTC for a long period of time promises greater profits. Because it is based on several interesting things regarding the future development of Bitcoin, be it mass adoption or lots of positive news that can make Bitcoin prices rise significantly.
Easier said than done. Unless you have a lot of confidence in your various other investments (so I guess I am speaking towards diversification.. but not into shitcoins), it can be quite difficult to see your investment go up 50x or more, and sure I am not even claiming my own to currently be up more than 27x, since I like to use $1k as my average cost per BTC... .. and so you can imagine that at some point there's gotta be some shaving off, and figuring out how to deal with the volatility without screwing things up.. ....