Why did people think Aileen Wuornos was evil?

Yes, Aileen was evil, and she probably would have never killed anyone if her childhood was different. If she had grown up in a loving home, she would probably been a normal fine person, but that was not the case. I do believe her experiences in life influenced her greatly in becoming a serial killer. Should she be killed for her crimes? Yes, I believe so. She was of sound mind and knew exactly what she was doing when she killed. She planned the killings. She was robbing men and killing them to shut them up. She lured them into an isolated area and killed them in a cold blooded manner. I don't think the people that had their loved ones murdered really care about why she did it or what caused her to do it. You cannot excuse someone because they had a terrible childhood. She still had the ability to not kill and she chose to kill instead. That is evil no matter what the reason might be for doing it. Her childhood probably did lead to her ability to kill at will, but she is where she should be right now. Giving her the death penalty was the right and just thing to do.