From Day 1, it was Google in the shadows of the company (due to the connection with Wojcicki), so it's obvious that a Google-connected company would try to monetize the data.

Now that being said, when it was launched, 23andme was the only way to have very affordable and high-quality and reliable DNA scans.

This data is very useful to improve your quality of life today using tools like Promethease. This to be weighted, against a risk that "potentially" someone may use maliciously in X or XX years.

There is also the "risk" that they use this data to develop popular medicines that will actually help your long-term quality of life (if you can afford it).