You had asked where are the good people in the world. I'm a good person, but these days it too is hard for me to meet another good person. I feel somewhat like you, I live in Phila. not far from NY at all. However, I tend to look for the good in a person, maybe I'm not so jaded, then again, I'm not as old as you. I'm only in my first year of Nursing School, have 2 jobs, and just try my best to get along. I never felt the need to fit in any one group, never really thought of it, but I too can feel the ways you have described. Maybe you do look into some things a little bit too much, and there is nothing wrong with that as long as it will never distance you from at least being somewhat open to someone new and someone who won't let you down, or have you feel used, or any of those things you feel so jaded about.
Maybe you expected life to be a little bit different than what it is for you, coming up on 30? Maybe you just have lived a very big life for only being your age? Or maybe you just have found out that yes, not everyone you meet will be the sincere friend, the one who will have your back, the one who will not hurt you and will care most for your heart. I have been that person and let me tell you, I can't count on 2 hands how many times I have been my best for someone, only for them to be their worst for me. However, I would say to you to not give up on what we know as the human race, because if you do, you may lose the opportunity to meet the one that will be there for you, always..and they only sometimes come once in a lifetime.
I would tell you to be yourself, and your best self always, because one day it will all pay off for you. We never know who we will meet or under which circumstance, and I think you would want to make the first impression that is or was once the heart that you were, and I believe still can be. Sometimes all it takes is to meet one single soul, who will be the sincerity to change such a jaded heart and mind. Please don't give up on yourself having a much lighter heart, than the one you have now. So, hello neighbor! Have you ever been to Phila? =)