One use is the movement of money, international payments across borders always have high fees, from what I have read (could be fake?) its anywhere from 8-20%.
Sending money internationally depending on what crypto you use can cost a nominal fee. I’m sure I read 3,000,000 USD in XRP was sent for 0.70C - near enough instantly.
BTC fees are low and there are multiple other currencies with little to no fees...
That makes very little sense - how is it useful to say go from GBP to BTC to USD rather than simply going from GBP to USD... you certainly don't need to create a new currency to do that and you especially don't need to make that currency require some pointless "work" be done that also consumes a load of electricity.
Look at say TransferWise or Revolut if you want cheap FX transactions as a retail customer.
I thought the movement into crypto started because people where fed up of the bankers charging us for using our money how we wanted... the financial crisis in 2008 was the nail in the coffin...
What relevance does the financial crisis have here? Other than people getting angry at bankers (not because they're mad at transaction fees but because the taxpayer has had to bail out a load of banks) I'm really not sure what your point is there.
I would presume he means for illegitimate purposes. I can't think of a single legitimate use-case where a real physical currency such as GBP would stop you from making your day-to-day transactions.
Yup, it seems there might be some use in cases such as buying drugs as the previous poster mentioned, then again unless you're also going to take a haircut from making use of some laundering services then you're potentially going to have a permanent record that you've bought drugs, it could come back to bit you... whereas if you were to simply hand over physical cash to someone then no one would be any the wiser in years to come.