I felt like I need to do so with my parents but then they seem more comfortable with our "don't ask, don't tell" system. My wife, who has no been out as long as I still wants to sit down and explain everything with her fam/friends.
Mostly I feel bad for my kids for the few years of normalcy they missed...but we got out early enough to salvage a few years. To them it is more a justification of why we didn't get out earlier.