One thing that makes me sad, is that there is not nearly enough time in the world to meet everyone on this planet. Even if you spent just one second with each person, it’ll still be longer than your whole lifespan. Not to mention death/births.
There are SO MANY people on Earth. So do not forget that the people you meet are lucky. You have met them, and they are lucky to have met you, for both of you are limited by how many people you can meet.
Just think about this and you’ll think about how important even the minimal people are in your life.