Yes. If you shop around, you'll find that wives come in a portable model that you can take with you around the world. In fact, they're much easier to find if you're already halfway around the world, as then they've at least demonstrated the capacity to get there and a predisposition towards traveling.

Kids are pretty portable for the first several years as well. We've only had this one for a little over a year now, but he's got a dozen flights and seven countries under his belt already.

(And heading off the inevitable 3rd piece of that question: Yes. I've found that houses can remain happily unoccupied for months on end, so long as you either bring along enough money to keep paying their mortgage or pay it off before you leave.)