The idea that you should not spend Bitcoin and only spend fiat is a fallacy made by state spooks to stop bitcoiners from using it as MoE. You can simply buy Bitcoin with your fiat and spend that Bitcoin when you need it. It does not matter for your wealth whether you spend fiat or spend the Bitcoin you bought with it. Know that people have agendas. Don’t let them sell you fake narratives. Bitcoin is meant to be money and used as money.