- It matters a lot to some
- It matters a a bit to most
- It matters little to none to some
The quotes from the article seems to confirm this. To pile on to that anecodotal eveidnce, here's another quote from an adoptee I know:
"Just because I know I'm way better off being raised by [adoptive parents] doesn't mean I don't feel abandoned by [biological parents]"
And at least from a biological standpoint, since your brain was evolved for the sole purpose of aiding in spreading the genes you posses, it makes sense that it would matter to your brain.