Evil

I believe environment has a lot to do with who we are. Genes and whatever else we're born with have a smaller part. Your actions now depend on your past and how you were/are treated by the world. If someone is abused as a child, they're more likely to abuse their children than someone who had a non-abusive childhood. What the world throws at people is what people will throw at the world even if that retaliation is years later. That's not always the case but it is most of the time. I don't think anyone is evil just to be evil. People normally have a good reason to do so. But it's like a chain reaction and the evil gets passed on and passed on whether it's a person's kids or friends or anybody they come in contact with.
I think karma plays a part too. We're paying for stuff that didn't happen in this life. But for the most part i believe how we behave is due to our youngest years. We are taught things about how the world is and it sticks with us. You can't teach a old dog new tricks. If the information we process in our heads as a child is misguided but we believe it, it becomes extremely hard to see the truth as we grow older. For example, if someone is told they are stupid over and over again as a little kid, they will believe it because they don't know better. That's why it takes so many therapy sessions to re-learn and re-shape what goes on in our heads.

Whats love got to do with it

What makes love so complex?

We are complex, love is simple. People's brians get in the way. Love is about what goes on in your heart ( i know that sounds really corney) and not what goes on in your head. There's so much crap floating around in our heads that the way we connect to ourselves and know what we're really feeling gets buried. An apple, for example has one layer and then more layers and then more layers and then you get to the core. You have to eat all that stuff to see what the core looks like. This is impossible for us, except for the Dali Lama, because the way our lives are run is crazy and demanding and stressfull and busy. We're constantly worrying about the little things and don't have time to explore the big issues. That's why there are so many divorces- too many people are getting married before they know who they are let alone what they're looking for in a partner. So love gets complicated because we make it that way. Plus there are different kinds of love: family love, love love, friend love so that just makes love even more ambiguous.