I disagree, I sequenced with nebula genomics years ago.. you can understand risk factors for various problems so that you can start interventions that make sense way in advance.
Did you actually find any actionable results? When I had my genome sequenced professionally they told me I literally had no SNPs in my genome that were associated with deleterious mutations. And even if you do, there are only some treatments- and those treatments usually have clinically validated tests that are accurate.
Yes, mostly preventative. Like it caused me to have my cholesterol checked and realized my triglycerides were a dumpster fire. Also good to know about certain cancer risks that I never would have checked up on regularly.
But if you had your entire genome sequenced and not just a check for specific risk factors then 100% there is all sorts of interesting information you can find on yourself. There are tons of correlative studies out there.