What are some reasons December 25 is wrong for Jesus' birth?

Shepherds watching their flocks by night! They wouldn't be doing that in the dead of Winter.

The Romans forcing people to travel to their 'ancestral city' to be counted in a census or to pay taxes--in a time when 99% of people never traveled more than 5 miles from their home in their whole lives. I can't see why they'd do that, and you'd think there would be some records of it. But even if they did, in the middle of Winter?

I think it's in the book of Luke (?) that it says that there were shepherds taking care of their sheep. But that doesn't happen there in December because it's way too cold. The Vatican shifted everything to late December because it coincided with some Roman pagan holy days and this way they could slowly make everyone into Christians ...

The idea of Christ being born on December 25th is actually Pagan in nature. Pagans and Wiccans celebrate a holiday that predates Judaism by thousands of years called Yule. On December 25th, we celebrate the triumphant return of the Sun God. Even though it is a lesser holiday, Christianity eventually assumed the holiday, as invading religions do.

It is interesting to note that Christ's actual birth took place in August. The Roman Catholic Church celebrates the feast of the nativity in August

Everyone knows Christ wasn't born on December 25th, that is just the day that everyone celebrates his birth. The reason honestly for Christmas (Christ's Mass) to be held on the 25th, is the same for most other Christian holidays. It's because the pagans had many holidays, while the early church had very few (Paul had told the Christians to stop holding the Jewish ones). So the church adapted the pagan holidays to Christian themes.

This helped stop some people from celebrating pagan gods concurrently with the Christian God, and helped Christians spread their faith. Of course the Church didn't win every battle, Halloween is a perfect example. It used to the eve before Hallowmas or All Saints Day. The pagan and materialistic themes have clearly won out in our society.

I still find it good however to celebrate the birth of Christ with all those who do. We don't know exactly what day Christ was born on, so what does it matter which day we thank God for the gift of his son.

that time is winter in that area , so no shepherds would be out in the fields with sheep , the time was chosen when the pagan population had a festival called saturnalia , for a week they celebrated the passing of the sun being midwinter .

Christianity was gaining ground by then , so to welcome the coming of the real SON they have it then.

but now commercial interests have taken over , making people spend above their means to buy presents that within a few weeks lie idle on the front lawns , in the garage , then they await the credit card accounts to arrive , and in a lot of cases domestic violence erupts, as they see arriving to heap more misery on their lives

valentines day , easter , and so it starts all over again

It doesn't matter. It's the day that we CELEBRATE His birth. It doesn't have to be the actual date.