You're right, Ulf. It wasn't a very good answer. But not for the reasons you think.
If you are a Christian, or if you grew up in a Christian world, you might know only about Christian sources. Maybe you've just read the Christian scriptures and you believe what they say.
But there are many more sources. Some of them too late to matter. Some of them discovered only in the last 100 years. And some of them known to other people for thousands of years but not well known to Christians.
Muslims, for example, believe that Jesus did not have a father. He was created in Mary's womb, and she is his mother but only in the sense she gave birth to him.
The Jews of Jesus' time and even many early Christians believed that Joseph was Jesus' physical father, but Jesus became the Son of God at his baptism (or his resurrection or his ascension). In Hebrews God says, "You are my son. Today I have begotten you" (Hebrew 1:5). This verse reflects a Jewish messianic view, where the messiah will be a man like King David but will be (like King David) called a Son of God. The idea is called Adoptionism. It was condemned as a heresy by the Greek church in the 2nd century, and there was a major effort to exterminate it.
Also in the 2nd century, Celsus, a Greek philosopher, wrote that Jews believed Jesus was the son of Pantera, a Roman soldier. There is evidence that some of them thought Mary was Pantera's mistress, and others thought she had been raped by him (then her reputation saved by Joseph marrying her). The idea that Jesus was the son of Pantera persisted as a common belief among Jews until fairly recently.
There is an academic book by Jane Schaberg called The illegitimacy of Jesus (1987) that explores all the different evidence, and even clues in the Bible, that Jesus was illegitimate and that different stories emerged either to whitewash the fact or to exploit it against him.
You see. We aren't talking about the opinions of modern people here, but rather a conflict in the sources, and a difference of belief among Christians, Jews, and Muslims.