Knowing your genetic parents gives you a very basic and normal, but so commonly underestimated and misunderstood, privilege of seeing the traits you potentially have reflected in their actualized form.
You see who you potentially are and who you can become. This is the genetic mirror all human beings should have a right to at least take a peek at.
When you don't know your biological parents, growing up and discovering who you are is like trying to determine what you look like by feeling your face with your fingers. You can guess the shape of your nose and chin and ears, but you have no idea what they look like to others. You can also never discover the color of your skin or the color of your eyes.
When you're raised by genetically unrelated people and are kept away from your biological parents, you may never discover, nurture and develop some really interesting parts of who you inherently are.
My suspect is particularly suspicious because he fits so well as the missing central piece of the genetic mirror. Who I remember him as is so much like who I never allowed myself to believe I could be, but actually am. When I describe him, I'm actually describing a less known me.