i guess its a bigger issue for individuals with a Christian background , because ( of false doctrine of Pual) where Jesus died and took away people sins and give back salvation in return than what is the point of Evil ? For a person who believe in a true monotheistic God ; where every thing exist because of its will one try to find a reason to use Evil for one own benefit to become better , more patient and strong . With hundreds of problems Muslims have hardly have found any one complaining about existence of Evil