Solid financial plan, no timeline and no set place. We both like mountains and would prefer a more "four seasons" climate (we're in TX now - no family here, just the job ;))
We have moved around a lot with dh's job and have friends scattered all over the world so I have no doubt we would find friends wherever we landed. DH isn't the type to chase around a little white ball and we both are heavily involved in service here so I feel sure that would play into our decision.
And as others have mentioned, if grandbabies are in the picture, all bets are off - we have never lived near our parents during our own parenting stage, and I would love to be close enough geographically to be more involved in their lives.