I do not thiink your miles are worth any less than they were last week. Unless your making the argument that these terrorists have won and there won't be any more air travel.
In that case I'll give you a brand new crisp $100 bill for the lot of them. Our way of doing business in America was shaken up. Lives were lost, but these thugs have not won unless we let them. And your thinking allows them to win.
Life will go on. And if they do as you are suggesting, then we'll all be safe I guess until they start hijacking the railroad cars we'll be on again.
and the offer to buy out your miles stands.