Biden was the candidate, first, because of the support of Clyburn which, pretty much, assured black votes. The other thing is that the other candidates were, pretty much, either not well known or offensive to most of the independents. He was also a faithful Democrat, for years, and pretty much stuck to his principles. All told he wasn't a bad candidate. He is, now, actually starting to be a president as well. A good thing, I think. (even though its taken about a year for him to stiffen the backbone and learning that the Republicans were never going to come around to normal). This seems to be a Democratic thing. I can remember Obama going through the same thing. Its kinda interesting. Both of them have also had problems with their party.
On the wishful thinking end I really wish that the dems could do their fighting a little quieter and show a more united front thereby allowing them to actually create a platform which they can all support! I don't think that will happen because they either don't understand the thought of a common goal, or just don't give a damn.