It is sad that it's ending I agree but
stories are almost timeless, so you can always revisit them.
I think that it is a fantastic story too, full of spirit, passion and fragility.
It gives an interesting look into another world, where "God's power" (chakra) is given out and with that there is consequences, laughs and tragedies that occur. It's unique to me as I have never read a story where I felt sympathy and understanding (thereabouts anyway) for the bad guys/antagonists before.
The manga is better than the anime for me too, you just seem to get a better understanding of the characters from it, but others like my boyfriend, prefer the action of the anime.
There are lots of great manga's out there to enjoy too so don't be sad!