Everyone has their own opinions and unique ways of thinking, but not everyone knows how to deal with them. If I think the sky is light blue and you think it's cerulean, it's easier for me to just hate you for not believing what I believe and to simply leave it at that. It takes more energy, patience, and a very open mind to respond with "why do you think that?"—and try to understand their perspective of the situation. That type of response doesn't typically occur because of one thing—pride.
Pride because if someone doesn't see it the way you do, it means you're wrong. If you ask them "why," you're opening that possibility.
Pride because you're unable to put yourself in others' shoes and realize that maybe there are different ways of viewing things in this world. Everyone grew up in their own unique way. With what their parents taught them, the area they lived in, the schools they attended, the good or bad life-altering situations they've gone through. All these factors, and so many more, effect your perspective in this life and no two peoples' are the same. It takes a lot to open your mind to understand just how different we all are, and realize there's more than one right way. 2 + 2 = 4. But so does 1 + 3. Both right, just different views.
Again, that's a more difficult route. Hating you for your way is just easier. It means I'm right and I won't ever have to admit to myself that I might be wrong. But once you start that habit, it's hard to stop. Hatred is like a drug. Once you try it, you're hooked. You get a rush in spewing all your beliefs onto someone else. It gives you a sense of superiority over them, a natural tendency we have as humans because it gives us confidence. But that's the battle. God created us to love. It's innate. You see it in the care and compassion that young children have. That's who we are. That's how God wants us to be. Hatred is creation-made, not Creator-made. It's easier to hate and blame others for the problems in the world, it's harder to love and sit with them and say "let's work on this together."
So hold onto that love that guided you so beautifully as a child. Don't let that light in you die out because of the hatred we were taught to be so natural. God is the definition of good. Follow His ways.