He tried to work within the system.
He had too much faith in the Democratic party. That was his mistake.
Afraid to answer the hypothetical?
I have been asking you a plain and simple question all along and you have not answered who your preference is in 2020 Elections. Biden or Trump??
If it is Trump then you are happier with the present status quo of the Affordable Healthcare being abolished under Trump's second term. Also, his continuation of arms funnelling to Al Qaeda via the UAE.
How about the rich getting richer while the rest of the Americans go deeper and deeper into debt with Students being discouraged with attending the Universities??
Well, if Sanders is ahead and has a chance of beating Trump then I would say, yes Biden should drop out of the race. However, in the realistic world and not the Trump reality one, that will never occur. Period!!
Sanders has endorsed Biden as the runner, so let's move forward with it. Or do you prefer Trump, as these are the only two realistic choices??