[1970-01-01]

It's not money in the real sense. You can't buy water with it. You can't buy medicine with it. You can't buy land with it. The map is not the territory with Bitcoin.

[janandonly]

I am a European, so when I visit the USA or the UK I would be "unable" to buy anything with my credit card ?

No, of course not: the payment provider does an on-the-fly conversion for me into whichever currency is required on the other end.

There are a ton of banks that now give out credit cards that support Bitcoin wallets. I, personally, have 3: Revolut (https://www.revolut.com/crypto/), BitPanda (https://www.bitpanda.com/en/card) and Wirex (https://wirexapp.com/card).

There are more options in the EU (such as Xapo Bank) and even more in the US, like Strike (https://www.strike.me) and Cash app.

[g5g5g5g5g5]

I guess you could if you're willing and able to pay someone else to make the purchase on your behalf; I doubt it's a widespread practice though.