I totally agree with slimboyfat and that is exactly what I do with my relatives and former friends. I contact them if I want to.
You have to understand this in the context of how The Borg treated me, worse than an animal. I have taught myself that I am equally as valuable as other humans and I now act accordingly.
Rule #1: This rule applies to the majority, who been horrible to me. What would it say about my self image if I were to seek a relationship with people who have proven to be bad to me? So they are completely off my list of people I waste my breath on.
Rule #2: This rule also applies to The Horribles. They have made it clear what type of relationship they want to have with me. I will not stoop to chasing after them.
Rule #3: This rule applies to those who have not yet met any criteria to be included in The Horribles Club. They were nice and lost contact with me for various reasons that people lose contact with each other. To them, I have reached out. Most of those don't respond when I reach out, so I follow Rule #2.
YMMV