Who is Tahitians from The Voyage of the Beagle and what is their importance?

Of all the people Darwin meets, he likes the Tahitians the best. Living on a beautiful island that supports a wide diversity of fruits, vegetables and animals, the Tahitians are peaceful and friendly. They seem to have no enemies, no ambition to conquer and take to the missionary teachings very easily. The island provides plenty of food and other resources, both wild and domesticated.