Brother if we are allowed to live our lives according to the desires of our flesh then Jesus died in vain. Also being born again of His Spirit is to put to death the lusts of the flesh, the old man, and to be holy as He is.
And that's my 2 cents worth.
Let seculars be secular. As Jesus said, let the dead bury their dead.
If some of our Christian friends had their way, there would be roving bands of religious police enforcing morality and locking up people who engage in pre-marital sex, etc. No thanks.