Benjamin,
You may typically expect to be apart for longer than you would otherwise prefer, but occaisionally, for not quite as long as you might like.
If you have already found a wife who will follow you to every far-flung corner of the globe, maybe your questions should be along the lines of "Do I need a career at all, whether it be connected with aviation or not?"
Then again, if She is going to follow you, maybe you need a career in aviation, preferably one which takes you to the far-flung reaches of the globe.....
Your answer lies in the responses you have received thus far (my own excluded, naturally); every one of them is valid, and you could do worse than base your decisions on their collective wisdom.
Please tell me that 1981 doesn't relate to the year of your birth, or I shall become terribly depressed.....!
Good luck, and keep a stiff upper. Lip.
BW