Parents how do you ignore the terror/fear of your childs death?

Ever since I was a father of twins 2 months ago I had the most terrible intruding fears that my baby can die horribly. I know that there is no heaven. I know we are in an uncaring universe where there is no cosmis laws. I dont want to lie to my kids. I know anything bad can happen. I cant sleep some nights because I know that. I see how our world is entering another great depression. I see how tense it is getting. How our kids are going to have less and less opportunities. Things will get more dangerous. I worry that I did the wrong thing to have kids. I would die to protect my kids, but if I found out that the worst happened, I would kill myself the same day to be with them. Even though I know that there is no heaven. Know what Im saying? I wouldnt want to live without them. Sorry ... I havent got much sleep. But im getting worried as shit every night for the future and well being of my babies.