One thing you should learn sooner or later in your life- ‘It’s always people who are disappointing’. The more you expect out of them, more disappointed you will be left. The root of all the issues here is Expectations. You think the people around you love you as selflessly as you do but the truth is, that is not at all the case. There might be few, which is a rare case but when we talk about majority you will realize that it’s true. I think the moment you start doing something and expect something out of it, 80% chances are you will end up disappointed.