Should Hillary drop out?

I must admit I admire Mitt Romney's honor to drop out and endorse McCain for the good of the party even though they hated each other. Everybody agrees its almost impossible for Hillary to win, this race could carry on till August and it has already divided democrats enough. They need to go ahead and get a nominee so the party can rally behind them and get support of people like John Edwards, Nancy Pelosi, and Al Gore. If Mitt Romney can be honorable and put aside his ego and endorse McCain after all they went though, Cant Hillary aleast just drop out for the good of the party. She doesnt even have to endorse him. And if I thought Hillary had even a snow chance, I wouldnt say this but the numbers are just not in her favor.