There's pitfalls with this too. A loved one bought me a genealogy DNA kit - because I do tons of genealogy.
But I also do IT security for a living. DNA databases are a magnet for powerful bad actors and submitting my DNA to one would introduce new risk to me and my family members. This loved one lives in a world where this sort of risk is invisible to them. There's no simple way for me to explain it to them.
Now this DNA kit just sits here, right along with my guilt.
For genealogical purposes? I haven't considered it. A bigger picture is I'm not sold on the usefulness of DNA testing in general. Comparison testing shows a lot inconsistency.
Most of the lines are fairly well filled out anyway; the big exception is one great-grandfather I'm stuck at. I figure some new records will come to light one day.