Yes birth control, no periods

Just about every single magazine I read has these ads for birth control that gives you a way to have only about four menstrual cycles a year.

A recent article I found says more women are interested in birth control that gives them fewer periods.

But I wonder, isn't this messing with nature a bit? I've never known a woman who actually enjoys that special time of the month, but maybe there's a good reason for not concentrating a year's worth of mood swings and cravings into a couple of days: