There are wars now and there will continue to be wars. Do you mean a war called World War 3 or the mythological theory that is depicted in media? Because real war especially one that kills a majority of the world's population is brutal and slow. War can also escalate so in theory if the Ukraine/Russia war ends up leading to WW3, then those people are already experiencing WW3. You are detached from reality, as are most, even modern generals do not understand war fully. Be prepared for starvation, cannibalism, betrayal, deception, panic, worry, pain, gas attacks, poisoned water, robbery, robbery/rape by color of law, court favoritism, nightmares asleep and awake. The world has experience in these things the the scale and ingenuity will put anything currently known to shame. I expect leaders to stack your bodies in hopes of saving themselves. If you saw what was coming, you would kill yourself so it'll come like a thief but it is not instantaneously going to kill you, it will bind you up, rob your house, rape your wife, kill your dog, and then you but you will not see it coming but you will see it when you are overtaken and overpowered. Turning back is a no go at this point, turning back would avert this causality but they won't turn back. My personal estimation(not guess) is about 7 years before nothing is recognizable to now and I don't mean for the better. Life goes on, just not ours. Pregnancies now might survive but anyone alive right now will die in some fashion, yes there will be 7 year old soldiers and suicide missions done by 7 year old before your overlords will surrender to God. They will kill you with zero qualms. God cares that He will fight through you to get to them, this is where you are choosing sides. Let it be crazy because it isn't.