Evil

The past two weeks we have been discussing evil and why there is evil in the world. There are many different views and theories on why evil exists. Some philosophers feel that without evil, we would not know good. Some say we need evil to give humanity moral responsibility, or that it lets humans show themselves at their best in reacting to evil.
In my opinion i feel that evil exists so that we can really understand what it is to be good. I feel that it also gives us moral responsibility and i also feel like some bad things that happen have absolutely no purpose lol. I have a lot of mixed feelings. Bad things have happened to people I know that I don't feel like they deserved. I have had two friends pass away tragically and so many people loved them. I hate that people have to go through such tragedies and there really is no explanation for it. I don't understand! I guess I'll just try to make decisions with the best intentions and if and when something bad happens, because it somehow always does, I'll just try to stay optimistic and hope for the best.