Poverty zombies purge gov

Ok so this past couple of weekends i heard a couple of people talk about how one day the worlds going to end and then were all going to be poor and scavengers then start eating each other and how we should start stocking up on everything like water food ect. I know eventually the world will destruct by its self but like when ?? Are any of you scared ? Like im pregnant and it makes me think about bringing my generation of family into this world cause i dont want them to have to die by zombies and all that! Do you believe this will even happen . i just feel like the people dont know everything thats behind closed doors .