People buy bitcoin because they think they'll be worth millions some day, but who should be the fool buying for 1000$+?
Has this question been answered before?
A new user with a german nick, that translates into humans enemy. lol
It is simple economy, when the demand rises and the supply stays the same price goes up. The "fools" are the people who don't have bought BTC already or who didn't buy enough for their future use.