This is a practice that has probably contributed to more divorces than anything else. The reason is that the social stigma of height has limited a woman's choice of men -- and vice versa -- to where people "settle" for a mate that is less than desirable. Historically, men have always been taller than women. And being tall is also a show of power or dominance over the other. But as cultures merge and women become more prominent in society, the height factor becomes another stigma in our society that should be eliminated.
Many women look for the ideal man: Tall, dark, handsome, muscular, suave and debonair, with great intellect, and well-travelled. At least that's what I see on Craigslist Women for Men postings. The emphasis is always on "tall."
Unfortunately, I am short, fat, totally uncultured, the consummate village fool, and as worldly as the common barnyard hen. So this is a particularly sore point with me. On a blind date recently, the woman was so tall that I ended up escorting her kneecaps!
And what would happen if a short man married a tall woman? She would have to carry him over the threshhold! Other problems would follow. The man would have to carry a stepladder to get a simple kiss; either that, or the woman would be on her knees for any intimacy. Conversation would be difficult as the man would need a megaphone to make himself heard. If the woman were especially tall, he'd have to wait for the clouds to part to see her face. And then the stares. People would point and whisper, as they always do when society's dictates aren't followed to the letter.
Nonetheless, this is a stigma that needs to go away. People place too much importance on the physical aspect rather than the cerebral and emotional. It's the latter qualities that make for a truly strong and long-lasting relationship. If two people are truly in love then height should make no difference.