Really, it's just not worth the hassle. Just accept the fact that you'll wake up one day to find you own a fern and two cats named for TV characters, and that there's nothing you could have done to avoid it. The best you can hope for is that your siblings send their kids to live with 'Crazy Aunt [Your-name-here]' for the summers. Take solace in your career, and maybe a nice hobby like crochet or mah jongg.
Unless you're a man. Then accept the fact that you'll soon have a [country-of-first-posting]ese wife.