StephaneLaliberte - Census would not require man to go back to town where they were born. [...] Also, the purpose of the census was for taxes. How could the tax man evaluate the belongings of someone when they are not at home, without their possessions?
Ancient history 101.
Half banana - As far as I am aware (and I'm happy to be corrected) there was never a census in the Roman world at that time, before and after perhaps. The Romans kept very good records and there is none.
The census did happen in 6 CE. It's just that it was a local census—not a census that was carried out "in the whole world" as the Bible tells it. Quirinius became (legate) governor of Syria, and at the same time also Judea became a Roman province. It was a Roman custom to carry out a census in a new territory for tax purposes (assessment of the citizens' properties and their worth) to see how much money they can get from this new territory. Josephus mentions the census in Antiquities Book XVIII somewhere in chapter I (and it's hard to see how he would have a Christian agenda to pursue.)
These include the Mithraic legends of Persian origin, based on ancient astrological lore of the birth of the Son of God in the East who were visited by the three wise men (magi or persian astrologers).
Nope. That's a myth that originates from Gerald Massey's book from 1880s (if I were to place a bet—I'm not completely sure, but his book definitely focused on the false connection between Jesus and Horus, so it's not hard to see how he could also give rise to this false connection.) New Atheists on the Internet keep spreading this nonsense for some reason. They don't bother to check the facts. Mithra (the Persian god) didn't have any magi visit him. Mithras (the Roman god) didn't either. (For some other reason, those Internet naive "freethinking" individuals keep confusing the two gods even though they have nothing to do with each other.)
Luke's account for example recalls (for a Roman audience) the legend of Romulus and Remus where their births were subject to a Herodian type of decree to slaughter all of the new-borns to deny the heroes a life.
Another myth. Amulius wanted to have Romulus and Remus tossed into the Tiber after either killing Illa (otherwise known as Rea Silvia) or hiding her in a dungeon for the rest of her life. There was no decree because Amulius' guards already had Illa and her twin children. If anything, there's a similarity between Romulus and Remus, and Moses because the twins were put in a basket and then tossed into the river, only to be carried away by the waters. It's similar to Moses' birth, but not Luke's Jesus'.
Anyway, Half banana, I must point out that you are confusing the reason as to why I asked this question. I am not interested in the Watchtower's apologetics. I never find it convincing. I am an agnostic atheist in regards to the belief in god in general, and when it comes to the Christian God, I am a strong atheist. The point of me asking this question on this forum was to find out how Jehovah's Witnesses reconcile the gospels just in case I would debate this point with a Jehovah's Witness in indefinite future. So I know the gospels are making up the story of Jesus' virgin birth to fit their beliefs about the Davidic messiah.
scratchme1010 - I wonder if there's a reason for looking at that particular discrepancy in the bible as opposed to the many others?
Right. No specific reason. Just somehow this question popped into my head, and I have a curious mind.