Thought-provoking article on Vox about the potential consequences of genetic testing, in this case with 23andMe:
At first, I was thinking this is the coolest genetics story, my own personal genetics story. I wasn't particularly upset about it initially, until the rest of the family found out. Their reaction was different. Years of repressed memories and emotions uncorked and resulted in tumultuous times that have torn my nuclear family apart. My parents divorced. No one is talking to my dad. We're not anywhere close to being healed yet and I don't know how long it will take to put the pieces back together.
Genetic testing is likely to become more common in the future as costs come down and technology advances. However, societal norms will create more problems like those described in the article.
The downside of technology sometimes isn't the fault of the technology but in our reaction to it.