Yeah this doesn't bother me. And I tend to be a somewhat paranoid person. But I got convinced to do one of these by my partner. And so far, no regrets. They had some family surprises, but they don't regret it either. If they make some cool new meds with my DNA (honestly even if I have only the knowledge that they made meds from 23andme) I'm just going to go around saying hey that might have my DNA in it.
Just wait until you guys find out what they're really doing is cloning us all to replace us with mindless worker drones. I accidentally met mine. They were nice. Bought me a coffee. Then I got real sleepy and woke up half buried in the woods. Real strange day.
Yeah I saw when that happened. I don't do the open sharing. But it is easy to identify me as a Jew plenty of other ways. Including online with things attached to my real name. So it is what it is.
If problems arise, you can always ditch your name but not your DNA. Obviously, those are worst case scenarios but I'm personally worried about DNA being used by insurance companies, being coupled to credit scores, used for higher education admittance, etc