"Why is Bitcoin said to be scarce?"
Bitcoin is considered scarce primarily due to its built-in supply limit and the rules of its protocol. The maximum supply of Bitcoin is capped at 21 million coins. This scarcity is achieved through the process of mining, where miners solve complex mathematical puzzles to validate transactions and create new blocks on the blockchain.
The limited supply of bitcoins is what makes it so valuable and good especially against inflation. It will be more valuable as the years go by as the amount available to everyone further reduces, thanks to halving. With what you know about bitcoins and how more scarce it is becoming, it is a good choice and plan planning on how to get more bitcoins. When bitcoin becomes very scarce, Holders who have a lot of bitcoins will be able to make a lot of profit from it should they decide to let some of the bitcoins they have back into the market.