Mr. A... my new BIL was adopted, too. my .02 after talking with him about it is as simple as this.... Chromosomes do NOT make a family. Your family is the people who loved you and raised you. whether you share their DNA is irrelevent. My advice would be just to embrace the family you have, and forget about where your dna came from. Take it or leave it, that's my advice. You seem like a pretty decent guy, best of luck in whatever you choose to do.