DNA testing has lifted the veil of adopted children/adults. No longer private

DNA testing has allowed sperm donors to be tracked down by their children. This is I think both unsettling and good too. It was done because women needed a sperm donor, and wanted to keep it private. Now they are finding out that some have 20-30 half sisters and brothers and who they are. What do you think? Technology has lifted a veil to the term "who's your daddy".
I don't believe in secrets myself, and you are who you are, and your child is your child, even though you never had sex with or knew the mother.

Thoughts?

http://www.msn.com/en-us/news/us/he...-to-meet-them-all/ar-BBNejqR?ocid=HPCOMMDHP15