this is old topic. just want to add:
no one that does not have bitcoin has any incentive to buy bitcoins to pay with bitcoin. just because 1 place accepts bitcoin means nothing really.
That's wrong. They will want to buy bitcoins because it retains its purchasing power due its limited issuance ... so that when they come to buy something they really want, like food, they can afford the same amount (or more) food than when they got the bitcoins.
But if you can't think more than 2 steps ahead in regards to financial decisions then since you aren't going to be likely to have more than 2 btc to rub together .... well, it does meanz nothing really.