I'm confident the intellectual curve will allow for such harmony, but I fear it won't be in my lifetime. But also, there will always be a balance.. maybe this time the balance will reflect that of angels and demons. (More simply positive and negative(not necessarily bad) energies..darn those pipe dreams, :D
For better or worse, Hate is an important part of being human. It -will- manifest itself, and attempting to suppress it will only worsen its inevitable resurgence.
"That which is denied gains power, and seeks strange and unexpected forms of manifestation..."
In a world full of love and harmony? That sounds like a great idea, but it would greatly destroy the balance in the universe. At least the balance of earth. Think of it this way. On a scale there is love and harmony on one side and hate and fear on another. That is how the world is normally, perfect in balance or swaying back and forth to find balance. What your saying is add more "weight" to the love and harmony side so it says that way, but what happens when that weight is released? The scale dramatically swings to the hate and fear side.
The way it would workout in reality is that everyone would start to act cheerful and kind to everything. When a bad thing happens like it rains on your wedding,or you forgot your pencil at home, or even you jammed your finger when you tried to close the door. You start to keep all the anger contained inside yourself. Sooner or later you'll need some way of releasing that anger, but because the world is full of love and harmony you are not able to. When the slightest chance to release that anger you built up over time comes, you will release it in a fury.
Now I'm not say you will have that happen, but others might. Just think of what happened in the Salem witch trails. Puritans (people who wanted to follow the bible word by word) tried to make a society without any anger, meaning that it was against the law to show any sign of the seven sins. Over time when people had all that angered bottled up, around twelve girls started to accused women of being a witch. In the bible witches must be killed, so lots of people were being killed left and right. If a person wanted his neighbor's land, all he had to do was give a little hint that maybe that person was a witch, and that person would be prison-ed or died in a few months.
Rather then just living in pure love and harmony, I think it would be better to have a world where people understand each other better, and understand that this world lives in a balance. Like Yin and Yang.
I dont think Eden can be created here, the earth I feel is sometimes a living hell with everything that happens on it, deaths through natural disasters, wars, poverty etc and also the trials and stresses that life throws at us everyday, peace could never be achieved here, in our own personal lives peace is more achievable through our desire to have peace but not in the planet as a whole. It will happen but not in this world. Love and Light.
I have been asking the same question to myself since I have gained some sense about life. Now I think what would the world be without hatred? We would not know the essence of love. And then it is a part of the world. We know we cant change it. Why not except it and embrace it as a part of life. Its like if you love someone you love that person as a whole-his warts and all. Why not expand this concept to universe?