Very useful info! I use my credit card to buy Bitcoin, then transfer it to another address and then to my trezor/ledger. It would take time to convert that back to cash (and I won't do that! But I have done VERY well this year. I have an annuity that pays enough each month that it keeps the interest charges down. Not that I care, because I always keep 6-12 months of cash to just throw at the fiat bank and pay off that card any day of he week. It's an emergency fun, just don't try to ever use it. It's all in how you play the game!