Family proximity

We have had conversations with other older people and heard statements about our good fortune to have quite a few family members living close by.  

I know that the job market, business dealings, scholarships and other opportunities can disburse loved ones all over.  Heck, your daughter can meet a future husband on a plane trip and later announce she needs to move to New Zealand.  So far, most of the rearrangements only involve places on this home planet but who knows how long that will last?