No one knows what Jesus was doing until He was near 33 years of age.
God's plan,"Be fruitful and multiply".
Wouldn't bother me a bit if He was married and had a dozen kids.
One thing for sure,all this chatte about the book & movie will insure the movie as a blockbuster.
Such a state of affairs would turn up in the gospels, epistles, or other writings by contemporaries. It wouldn't wait for centuries of intrigue by some sinister Catholic cabal. "And who can speak of his descendants?" A significant Old Testament prophecy would go down the drain. It wasn't unknown for prophets to shun the married life because they had to go trekking through the wilderness to perform their ministries.
Mission accomplished.