The problem is that you seem to expect rewards for simple things like saying hello, or wishing someone a nice evening. That's not how the world works. People respond to the people they want to respond to. If you say good morning and someone doesn't say it back that's their right, and you don't have the right to be upset about it, and most people wouldn't be, they'd just shrug it off and continue on with their day.
Just from the way you write here you're very off putting. I have to assume that you're the same way in day to day real life. That's not how most people react, and why you do is beyond me. Maybe it's just the way you are, maybe there's an underlying issue like Aspergers, or maybe it's the way you were raised. I have no idea, and sadly no one else online will be able to diagnose what's going on.
