In regards to the ornaments, it suggests to me this: The ball is rolling, action/you're watching a movie, checkmate.
Something just occurred to me about WHY they may not have children. Consider the Georgia guidestones, they feel the Earth is overcrowded. They want to, "maintain world population," to half a billion. They have no children because they are homos and probably think that being a homo actually helps them keep the population down. Gays will never procreate if they prefer their own sex.
Regardless of your personal view about the bible, God said, "Go forth and multiply." The devil and his adherents on the other hand, want to kill us all. It truly IS about good vs evil.