I have no idea how your reply relates in any way to what you replied to, but in defense of credit cards, if my credit card is stolen I'm not liable for any charges and if the airline screws me over I can dispute the charge with my credit card company and get my money back. Paying with Bitcoins is like paying with cash - if someone steals the cash, it's gone, and the airline screws me over, I can't get my money back.
This is only true if you use the simplest Bitcoin transaction.
However, Bitcoin supports programmable m-of-n transactions, which enable highly nuanced levels of risk hedging.
I suspect that it is only a matter of time before Silicon Valley (and elsewhere) innovators realize this and start providing smooth "select your desired level of risk" services.
