Okay, one obvious flaw in your statement, "Infinite universe = everything exists", is that within the definition of everything, there exists the definition of nothing, and therefore, you are also saying that nothing exists. (Dualism is cool, isn't it?) Anyway, you are also saying that every bad thing that could exist also exists. If that were true, every bad thing would cancel every good thing, and again you are nowhere. (The Truth). We only know our experience of ourselves as sentient human beings, and we experience this universe as our senses tell us it is when we look at the material world. The truth is that everything we experience on this physical plane is the result of energy coming from the spiritual plane. Including ourselves. We are not only spiritual beings in a material world, the material world is also made of spirit. It is all God, and we should be thanking God for our experience, both good and bad. The reason for that (Bad things happen to good people) is because our souls progress as the result of everything we encounter. The universe is infinite because God is infinite, but that does not imply that everything exists.
Nothing is what I want. (A true Zen saying)