How can you get your DNA sampled and what are the benefits?

There are DIY kids from multiple different companies. They send you a kit, you spit into the tube, and they eventually email you a link to your results. There are some concerns with privacy when doing it, as you don't know what happens to your DNA once submitted, and unless you specifically request a deletion, they keep it on file forever. The positives, you could also match up to some relatives around the world you might have. Some doctors are skeptical about these tests because most other "science" given to you is not actually accurate and also incredibly broad. Most of the time it does not mean anything.