But the question I have is, if we all know that BTC is scarce and its value will increase in the years to come, how can you bear to let go of your sat stash right now? What was the turning point that made you determined not to hoard your BTC and use it with an open heart?
Simple, spend & replace.
Anything you buy with fiat has opportunity costs since you could have bought bitcoin with it.
Hence if you buy something with bitcoin, you can buy the same amount of bitcoin with fiat afterwards so you did spend bitcoin but replaced it again. Same stack as before. Just as if you bought whatever you bought with fiat.
The turning point was when I realized this.