Natural and good, yes.
The most natural thing in the world? I think not.
May I suggest that pooing is in fact the most natural thing in the world?
Evidence:
everyone poos, not everyone BFs
pooing is easier than BFing, no-one needs to be taught to poo
we poo for more of our lives than we BF
more animals poo than BF
(am pro BFing, but anti twee statements)