Imagine a World Without Hate

All of those things can exist without the other.

You CAN love without knowing what hate is; you CAN ''see'' darkness without light; you CAN go up without a ''down'' existing (Though you would just be constantly going up until you died). There aren't any actually opposing forces that are inherently present to balance out the other in any of those examples. They're considered opposites, but that isn't remotely the same as balance.

Unfortunately you can't totally get rid of hate without being able to fully control the minds of every single human that exists and will ever exist. The fact that we're free thinkers means you will have different thoughts. Some will be good and some will be vile. You can show the people the right path, but as long as they have the ability to choose, some will choose the other one instead - heck, maybe even out of pure curiosity.

True peace has never and will never exist. The world was without peace before mankind set foot on it, and it will remain that way until it ends. It's good to try and rid the world of things like hate as much as possible, but as long as it CAN be there it WILL be there.

Well we could slowly but surely wash away that specific behavior. But people use ugly words like "Genocide" "Murder" "Immoral", just silly things like that