I agree with your sentiment but to be fair, we don't actually know Jesus' birthday. Most evidence points to late March

Christmas was just a way of integrating early Christianity with Saturnalia and pagan celebration of the Sun God rising after 3 days of death (after the winter solstice). Most likely occured in the 3rd century..

"It was in fact customary among the pagans to celebrate the festival of the Sun’s birth on 25th December […] But when the teachers of the Church realised that Christians were allowing themselves to take part, they decided to observe the Feast of the true Birth on the same day"