Board Thread:Episode Discussions/@comment-25319479-20170426101051/@comment-734582-20170426141427

What makes summoners rare is that the summoning animals themselves are rare. Naruto summons a Frog, which is an entire society of Sage Animals located in a faraway mountain. Sasuke's hawk is nowhere to be seen in nature. Snakes are apparently from the Sage Snake cave, so it's also not easy to find. Slugs are the same. Ninja Dogs are also nowhere to be seen other than as summons. Same is true for the Monkeys.

In order to become a summoner you either need to encounter a Summon Animal in the wild (super-rare and extremely unlikely) or you need to encounter another summoner. And that's not even touching upon the fact that summons may be completely useless for many fighting styles.

BerserkerPhantom wrote: Yeah, a demonic white snake. That just screams "child-friendly protagonist". A demonic fox that murdered villagers sealed inside a young boy. "Child friendly protagonist".