When a child WANTS to learn mathematics, the learning is effortless and remarkably swift.
If it were true that maths is boring at the beginning and only becomes interesting later, then no one would ever have discovered all the mathematics that has been discovered, because it could not have been being forced on children before it had been discovered. Each bit of maths was formed by somebody who had not been taught it but who did it purely because it was interesting.
How the future of a child not forced to study mathematics might look.
What non-coercive, curiosity-driven mathematics education looks like in real life.