It's true! Bitcoin is money! And it should be spent as satoshi would have liked. The real question is why do I have to spend those few bitcoins I have and not spend the fiat waste paper? Your reasoning is there for the bitcoiners of the first hour who have accumulated enough, they are all-in on bitcoins there that they start spending them. But someone who has approached recently thinks of accumulating and turns around to spend them. So yes, bitcoin is money and it must be spent! But first one has to accumulate enough. At least 1 ₿ in the safe and then you can start spending.