You are absolutely right, my friend. The 21 million Bitcoin supply limit is one of the key features that make Bitcoin stand out from other digital currencies.

By setting a hard cap on the total number of Bitcoins that can be mined, Nakamoto hoped to create a currency that would be resistant to inflation and manipulation by central authorities. This is in stark contrast to fiat currencies, which can have their purchasing power eroded over time through government policies such as quantitative easing.

As you mention, it is possible that the actual number of Bitcoin in circulation will be slightly less than 21 million due to lost or unspent coins. While this may seem like an insignificant amount relative to the size of the overall Bitcoin market, it does help reinforce the scarcity value of each individual Bitcoin.

Overall, I believe that the fixed supply limit combined with other core properties such as decentralization and security make Bitcoin a truly transformational technology with immense potential for creating fairness and empowering individuals across borders and jurisdictions.