How is it that some find the sweetest most compassionate loving people while others find only those who have no heart at all?

There's too many reasons to ponder, you'll drive yourself crazy.
Just focus on yourself, take care of yourself, become a better person everyday (for yourself)
And stop yearning for another person because some how the universe will not give it to you until your secure and happy alone... Its like a test. That and desperation is a repellant even if you don't act desperate... The world and people senses it. You have to align yourself with what you want, if your aligned with loneliness, you will stay alone