In order to abandon the dollar there would need to be an alternative choice for foreign investment and there simply put is not. The stability of the US politically and socially, in spite of its enormous deficit, still leave the US the world's most stable and reliable economy. Although Europe is stable politically, its slow growth make it an inadequate substitute for foreign investors. And even though China's rapid growth is inviting, the threat of political instability deters any long-term bets on its economy which in itself is still very young and needs time to mature.
Long term outlook is to buy the dollar and sell the euro.