cap said:
Force sensitivity is an inherited trait.
So of the people with the greatest potential to become Jedi, most would be the offspring of Jedi... except that Jedi are forbidden to marry, and presumably to reproduce.
Do the Jedi want to limit the power of future generations of the Jedi order? Why do they limit their own growth this way?
People in the prequelverse are dumb. That's all there is to it.
And btw, back some years ago Lucas said the Jedi are allowed to have sex.