Broken people?

People keep telling me that I should give up on thinking about my first family... They feel that they aren't worth my time... They say that there is no way that anyone with a conscious would treat me the way they are treating me, by blocking me and telling me to keep quiet. They tell me that they must be horribly broken people and that I am a better person than them for believing only good things about them. I have a hard time emotionally letting them go. I feel broken inside and I keep holding out hope that one day someone from my first family may actually reach out to me. I realize these are high expectations and probably groundless...but it's all I have. I believe I need to have a positive outlook.