This is definitely one of my favorite mangos ever if not my absolute favorite one. To me it competes with Monogatari/ Gintama/ Re:Zero and Berserk for the spot for my favorite.
The ending is one of the best endings ever and the plot up to that point actually gets serious for once.
I personally don't wish it continued (not that I mind if it did), because I feel like the ending was so satisfying that I don't even really need a continuation.