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.
This is the essence of the world at the moment; most people living in the world today are used to their money being worth less over time, and used to spending what they have now instead of later, and used to being in debt because of it. It'll take time before most people see the world differently, but I think it'll happen the more Bitcoin gains traction.