I truly and firmly believe that more of Bernie's agenda will be passed into law under President Biden than it would have been under President Sanders.
More importantly, both for Bernie and his supporters, by withdrawing his bid for Presidency he may have saved his movement from losing a great deal of its relevance. A presidency would have hampered his effectiveness in being a movement leader. Having a long record of ineffectiveness in building coalitions and passing legislation, President Sanders would surely have highlighted his shortcomings as a head of state, especially compared to his now legendary (in more ways than one) reputation as a leader of a movement, and would have likely tarnished its image, perhaps irreparably.
So without any intent to be ironic or facetious, I join all of Bernie supporters in having a promising future to look forward to.
Hell, even Sirota may come out a winner in this: I hear Trump is having trouble finding the right press secretary (Ok, I am being facetious just a little bit).