23andMe came out when I was in high school, and one of my science teachers spent an entire class period telling us how bad an idea it would be to ever use their service. Probably the most valuable lecture I ever had tbh, I've never even considered going near it as a result.

Makes me think that "data privacy" should be added into schools' mandatory health class requirements or something. Though most likely any prescribed curriculum would have been lobbied to death & not actually teach valuable information.