At a time where I see currencies moving away from cash to digital I think the reason is partly so that governments can control the flow of their currency more particularly for laundering. They can possibly gain more taxation from a cashless currency because cash cannot be fully traced. If i sell my car for cash to another individual the government dont get any revenue from that because it is not traceable.
So in a governments aim to control our money it will leave a big opening for bitcoin and other decentralised crypto to exist along with fiat and will allow people to "trade" anonymously with each other over a completely independent infrastructure.
Even though you can trade anonymously with bitcoin the government can always ask you about the source of your wealth.
Some institutions are even demanding the proof of transactions before one wants to buy a home, for example.
Their logic sounds like "isn't it weird that a homeless rapidly got so much money allowing him to buy real estate?".
So complete independence from the state is impossible, even with crypto
Easy. Find an institution that doesn't demand any of that. There really is no point in looking for proof of transactions since the money could have been the sum of a family's savings. For example, 5 siblings saved up money in order to buy a house and then gave it to their mother. The mother will have no way of giving proof of transactions since the money was simply handed over to her. Money can't be made out of thin air. Even the money that came from the mafias were once created by the government. There really is no point. Someone can spend millions of money but still not be questioned since money can simply be given to you by anyone without any transaction going on. Not every money people have were because they sold something or worked for it.
Another alternative is to make someone who has a good job to purchase the thing for you and then later on transfer the title to you. It's as easy as that so looking for proof of transactions is quite useless.