I am not here to debate, just wanna share my belief in what you are asking.
God simply allows evil, but time will come He will eradicate them all. Why He allows evil? To give us free will. He didn't created us to be like robots which He could simply manipulate to choose Him and love Him. He wants us to love Him freely, out of our own choice to love Him.
You see, you have a choice to love Him or not, it depends on you. But to tell you what sir, if you open your heart for Him, it would be the best choice you will ever make. I promise and assure you you won't regret it. May God bless you.