@tolio,
Well that's the thing...there's no real proof of it. There are some documents out there that say Jesus was married, there are the Gnostic Gospels, and there's the Book of Judas. The Old and New Testaments and the Apocrypha have simply been used for many more years than the other documents, and they determine what I believe. If I'm wrong about it, then I'll find out when I die.
As far as potential children go, I think The DaVinci Code movie put it best when Tom Hank's character reminds Sophie that a child of Jesus wouldn't want to ruin the church or Jesus' work. I honestly don't believe He had children, but as I said, I'll know when it's too late to make a difference.