Most Jews (and probaly plenty of other non-Christians as well) believe that Jesus existed. They just don't believe that he was the son of God and all that.
Anyway, regardless of one's personal beliefs, the idea of Jesus obviously plays a huge role in shaping the society and the culture that we ALL live in.
And according to your logic, no one over the age of 6 or so should be writing songs about Santa Claus.
Most Jews (and probaly plenty of other non-Christians as well) believe that Jesus existed. They just don't believe that he was the son of God and all that.
Anyway, regardless of one's personal beliefs, the idea of Jesus obviously plays a huge role in shaping the society and the culture that we ALL live in.
And according to your logic, no one over the age of 6 or so should be writing songs about Santa Claus.