My Thinking about Future of Digital Currency

I think Digital Currency will be bright in future. For my study, I have 6 main trends that prove that people will more use Crypto for payment in the future.
1- The Future of Fiat Currency : all Fiat currency is fail, sooner or later, we will face economic crisis. As our society now, we just use Credit system, as the FED print the money from thin air.
2- Trend of Countries : many people around the world now they have more good trend and tendency toward Crytocurrency, and in many developing countries now also studying and making the law to control it.
3- Trend of People : People move from using paper money to Online paying and online banking. Then they have Visa and Mastercard. Apple and google wallet is the next move. So we see people tend to use everything that is fast and easy. Crypto is the good option. With the low fee, fast, and secure, Crypto will be the future of money that people use in the future
4- Alternative of Gold/Silver : when economic crisis, people tend to find something valuable for do a payment and trade. Gold is the first option. When people flood to gold, then the price of gold will up so high. People will switch to Silver then. Anyway, Gold and Silver is not so flexible to use even they have been used for over 5000 years as the money already. At last, people will switch to Crypto, as it is more flexible, more secure, and fast.
5- Legal : more and more countries start creating new law to make Cryptocurrency legal. When SEC give certificate and facilitate the system to be legal, more and more fund will flow to Crypto, and the price of Crypto will up high. Marketcap will become big!
6- Blockchain Technology : the Blockchain technology has tremendious usage for the whole world! In many fields such as agriculture, health, education, import and export, government, administration, supply chain.. voting, microfinance, banking.. so alot need this technology as it help facilitate our work alot as it is faster, secure, and low fee. Blockchain will make the Crytocurrency to be boom in the future!

Please share and comment how is your idea about Cryptocurrency? will Cryptocurrency become the Future of Money?