Have you thought about what you would do if a surprise came up in your DNA test results? A sibling you didn’t know you had? A new first cousin, niece, or nephew? How soon would you reach out to that person? Would it depend upon what side of the family on which they were apparently related? Just because there are no surprises in your test results now does not mean that one will not show up in the future. That new relative could test at any point in time.
Even if you would welcome a new relative, they may not be so welcoming of you. That new relative’s test results may have been a surprise to them as well as to you. They may have thought they knew who their biological relatives were only to get unexpected test results. Some people never go back to their DNA test results if surprises in their ancestry come back.
All things to think about when the new relative is one you had no idea could have existed.