#1. Children mature at different rates.

#2. There is no test to determine whether a child is ready (in all aspects) for sex.

Therefore, ALL children will be assumed to NOT be ready until they reach a certain age.

That means that adults DO NOT FUCK children.
("children" being defined as humans below the age of consent)

This is the case even when:
a. The child thinks s/he is ready.

b. The child is attracted to the adult.

c. The child WANTS to fuck the adult.

d. The child KNOWS s/he is ready.

There are TOO many factors that CAN NOT be determined.
-therefore-
The child is given TIME to mature.

If the adult does NOT give the child the legally required time, the adult goes to jail.