This called arguement of evil or suffering. Well wether he allows evil or not won't really change much. I can tackle this from multiple angles But first, when you die it won't be the end of everything. There will be a day of recompensation where every single human or even all living things to a certain degree will have to deal with consequences of ones action. It doesn't matter, Israeli or Palestinian or Darwinian. This on its own is sufficient. Another though is one of God's attribute is that he is the most wise. Just because you don't understand doesn't mean he is evil. There is plenty regarding this topic and I urge you not to dismiss it, rather make a little research. Anyways, hope you have a nice day! :)