You're right, of course;- there's simply no way Governments are going to tolerate a decentralized currency over which they have no control becoming a de-facto world currency. Not a chance.
What they are all busy working on is a Central Bank equivalent that they'll call a cryptocurrency and will then outlaw the others in the same way they banish things like local community currencies or anything else that might undermine or rival the official legal tender being the only legal tender.
But one would remind folks of the reason that Bitcoin was developed in the wake of the last financial crisis- specifically to eliminate the meltdowns caused by corrupt or Lax Regulators, Markets, as manipulated by Governments & Central Banks.
Not been here since 2012, when i ran the Forex Net Trap forum and private members forum. Happy days, ended up a £2-3k in profit over a few years. I quit trading in 2013 when i discovered Bitcoin. Fair to say i aquired a reasonable amount abd instantly understood it's importance and never sold through 2 bear markets.
I sit on six figure £££ gains, and will never sell more than 50% even in BTC passes $100k next year.
They will never ban bitcoin, it will also never however be a worldwide currency, but what it will be, is Digital Gold , the hardest asset ever, as even Gold inflates a 2% p/a through mining. Gold's worth halves in value every 35 years due to supply inflation, buy it for you Newborn today and it will be worth 1/4 of it's value when they retire @ 70.
How ever bitcoins inflation halves ever 4 years approx, and its current inflation rate since May 2020 is just 1.8%. In 2024 it will drop to 0.9% , 2028 0.45% , 2032 0.225% , 2036 0.1125% , and in 2 decades time, just 2040 0.05625% per year. Gold supply will still inflate at 2%. it's the hardest financial asset ever.
This is why institutional investors and billionaires are now taking a position, by 2021 Bitcoins market cap will easily be over $1 trillion, sounds impossible? that's only 3.37 x the market cap from now, or $54k per BTC.
Buy some now!!!
Anyway just came here to change my email address, i may check back in 2029 after the 5th BTC halving and see who was right, from my Yacht!