Yes, Christianity will survive no matter what happens to the culture around us. It is not a question of our survival. It is a question of the survival of non-Christians. Those are the people who will be hurt. Those are the people who will be destroyed.

The real question is:

Why do you want to deceive and hurt so many innocent people? Why do you want to spread disease, depression, domestic violence and break up families across America?

Yes, Christians have survived in non-Christian cultures in the past, and do so today (in China for example). But why go back to the dark days of a culture that lasted a few hundred years and died out over 2000 years ago? Why not go with God, who is alive now! Why do you want to return to the past and embrace something that died out long ago, and turn away from thousands of years of practical experience that show that obeying God does result in better lives for us.

I'm not worried about my survival. I'm worried about you.