Why, so there can be an intra-party fight between Kamala Harris and every other possible candidate? What, are you crazy? And Harris would be subject to the racism that hit Obama *and* the sexism that hit Clinton.
I don't know that Biden can win but I'm pretty damn sure that no one else can.
"Having known Biden for so long...it pains me to say this but after the debate disaster, the onus is on #Biden now to prove his fitness to govern in the eyes of the public. If he fails at this, he should step aside before the choice is made for him by the American people in November..."