Well, it's only negative if you place a high value on monogamy. As another poster has stated, Koreans view marital sex differently than Westerners (I should say Anglo-Saxon, as most Europeans also have a different approach). Marriage here is a business contract more than anything, something to assure shared wealth and children. Just look at the weddings here. In and out in under an hour. Sex doesn't seem to be that integral to the relationship, at least besides procreation. I think that's where the whole "There's no gay people in Korea" thing comes from. You can marry a girl, get a nice apartment, pump out some grandkids and then do whatever you like on the side like the rest of guys. No need to make a big deal about it. Same goes for the ladies, most women have temp boyfriends while their proper guy is off doing military service (and visiting houses of ill repute himself). It's all understood, hush hush, mind your own business, what you don't know won't hurt you, kind of stuff. Again, I don't think it's viewed as negatively here as long as you're discreet, so it's not an insult to Koreans. I guess things are changing now. Younger Koreans seem to be obsessed with ballads and extremely emotional love stories and whatnot. Maybe it's a reaction to the older ways of doing things.
I think people who complain that others are being negative about Korea are the ones guilty of bringing their own cultural bias into the subject to begin with. You assume monogamy is the preferred norm and that straying from that is wrong. In fact, you're the one judging Korean culture because instead of looking at why they might act differently here you deny their behaviour because you deem it to be unnatural.
