I've never done one of these genetic tests. Partly because it's scary to me to learn what diseases I'm likely to get as I get older, but also I just don't want that information in some else's database. We're very fearful of what Google and Facebook already knows about us now imagine they buy 23andMe and then join all their data about you with your DNA (which you've already willingly given up and allowed them to "profile".
Google/Facebook user behavioral data + their users' DNA is about as scary invasive as it gets.
Google/Facebook user behavioral data + their users' DNA is about as scary invasive as it gets.