We are in the process of preparing for just such a move. We built our "first stage" retirement home 7 years ago in a community where we know no one. My parents do live about 40 minutes away, i.e., close enough when the need arises (their side or ours), but not so close that we will get in each others' hair. This move is from Tokyo to our home in California.
Back in 1999, we did it the other way around...moving from our previous home in Cali to Tokyo...and also about an hour from DW's family.
On top of that, this is our second stint in Japan, so we've done it all before. My DW makes new friends very easily, and will most likely have a new set of friends within the first 3 months or so at our new location. As for me, I am friendly with everyone, but I don't make close friends very easily. Having been in senior management for a very long time, I have had to learn not to become too close as friends with employees for all the obvious reasons, and I've not had much time to develop many closer relationships outside of work (because I'm always working).
As our new adventure begins to unfold, I suspect I will be just fine with DW as my best buddy, with a new pup running a close second. If I am able to develop close friendships over time, that will be great, but if not, I will be quite satisfied anyway.
Would I or will I move again to a place I don't know? Yes, I probably will, when the phase 1 retirement home becomes more than I am prepared to maintain. At that time, we may move closer to the kids (but not too close) or we may not.
R