Cataloging individual DNA data casually at a massive scale opens the door for massive genetic discrimination of all kinds, from discriminatory health insurance premiums and hiring discrimination to aparthied, eugenics, and genocide. "Don't be silly that'll never happen here." Is the height of affluent arrogance.

Humans have proven themselves to be fully capable of these horrors, it is just a matter of time until it happens again, and when we create tools of consolidated power-- just like IBM created machines that enabled Nazi concentration camps--we only increase the chance of enabling some deranged element of society oto repeat these catastrophic horrors.

All that downside just so we can consume 15 minutes of dopamine.