Does pure evil really exist?

I will answer my own question but I ask because I want to know your opinion. Evil exist ,I think we all agree . But pure evil (in my opinion does not exist.....what is pure evil?) This is a matter of opinion,here is mine , pure evil wants to kill everything that it can and it does not care who the victim is, but if pure evil did kill everything then there would be no one left to kill and when there is nobody left to kill, evil will vanish,disappear be terminated, evil does not want to die because it wants to continue to exist so it can kill. So evil approves of the preservation of life(a few life forms), evil wants there to be life because if there was no life there would be no evil. Good created life so its obvious that evil appeared after Good. Good came first,evil second. Good(that created life) is responsible for creating the purpose of evil ( the murder of life). Many christians will disagree with this....Good created evil and is responsible for providing evil, its victims it feeds on. GOOD is superior to evil because Good came first,evil second, Good keeps evil alive, evil needs Good, evil approves of keeping life alive(a few life forms), because if there was no life evil will have no one left to kill (except GOD the founder of evil and GOOD, I am not religious at all. Pure evil can destroy it self if it ever does kill everything,but it wont it cant because that would be suicide, evil wants to exist, evil disapproves of what it wants to do the most ,evil is so inferior. Evil disapproves of the murder of evil. and all life forms.