I have no desire to have my DNA deposited into some company that can give access to who-know who, if someone wanted the information. I know my family "story" and am fine with that. Heck, I wish some of my family belonged to some other family.
I have family I have not seen or had contact with for decades. My sister has been in contact with cousins and keeps pushing me to "friend" them. Well I am "family" and they knew where I live and have not contacted me, so "friending" won't change anything. I have two half-sisters that I would not know if they walked up to me. I have nothing in common with them , except for blood...I have no interest in connecting now.
BTW, there is no confidentiality protection from these DNA places. These are not considered medical facilities and HIPPA laws do not pertain to them.