It's very unfortunate that I have to read this.
Perhaps you are very far from reality, I don't know where you got your bitcoin orientation from but perhaps you're literally among the few marginalizing a fight against fiat which is never the intention of Satoshi nor bitcoiners because realistically we need fiat and bitcoin is not in anyway against fiat.

The intention was to create an alternative currency that works viz vice with fiat, bitcoin is never against the use of fiat but its a freedom currency which I prefer to call a paradigm, it's all about having full control over your finances which is the direct opposite to government desire, the governments does not appreciate anything that has do so much with privacy, freedom and that's why bitcoin is usually getting attacked by governments even though we see less of such case this days.

Bitcoin is a paradigm that has shifted our thoughts from only holding fiats in our banks without maximum security and privacy in our lives and also facing inflation problem but with the existence of bitcoin we now have full control over our assets or finances having your money in a self custodial wallet which absolutely freedom even though governments don't want such freedom to exist.

Back to your statement, apparently fiat is probably not going to disappear any time soon not even in the next centenary, so want you to realize how unrealistic that statement is but I do agree that bitcoin is best choice a beginner or anyone can afford at this point because its cheap when approached properly using DCA or any other method that might be convenient with he or she because if compared to assets or investments like real estate one will still have to save alot of money in order to purchase a building while at these same period he or she might be able to have accumulate at least a little stash of bitcoin that might in the process of saving even yield more interest even though I don't encourage short term investment.