I have loved all our championship teams, our "almost" teams, and even our "shouldn't, wouldn't, couldn't, and didn't" teams.
To win a championship this year would mean a lot to those players who were not on the '08 Celtics, mean more to those who have not won a championship before, but mean a the most to PP and KG. It would cement their legacy in Boston, while doing it under the most difficult circumstances...split of the big three; heart surgery, rehab, and return of two members of the team; double shoulder surgery and rehab to their defensive specialist; the All-Star Point Guard missing the second half of the season; injury to a potential ROY causing him to miss the second half of the season.
Sounds impossible. There is a difference between improbably and impossible. To quote Kevin Garnet, "Nothing is Impossible!"