If I send bitcoins to friends and family abroad, they are worthless until they are converted again to a real currency. I remember when someone buying Pizza with bitcoins made the news. Now the only thing you can buy with bitcoins is decryption keys from ransomware-installing hackers.

It’s more expensive to use Bitcoin than TransferWise to send international payments or money transfers. TransferWise often settles very fast if the destination country has good fintech plumbing (Australia, Canada, SEPA, etc).