Modern presidential politics is very harsh on the loser, it's typically a career ender especially for a democrat.
For years after 2000, Al Gore attempted to remind everyone that he won the popular vote. It didn't work.
Exactly.
But consider if he had been the better man and not contested the election? I think the Democrats would have fought hard for him later. On the other hand, knowing what jerks they are they might have labeled him as a loser. Oh well, Glad we are rid of him.