I have become quite obsessed. In a quiet way. I stare and stare at my children and wonder if they look like my donor dad. And wonder if there are traits that did not show up in me (or my sister?) that might be showing up in them. The question of nature vs. nurture shifts when you don't know half of of your genetic makeup.
I have been seeking memoirs of people that are in my situation. I have only been able uncover the perspective of late teen, early twenties girlfolk that have been living with their knowledge of their 'donor dad' and 'social dad' for some time. It's different when you have kids. It's different when you are older and the process was much more hidden. I suppose that many people who are like me might not realize that we are so alike.