| Dress pants for business
I think pleats are a must for suit pants. The suit pants should have high waist and two pleats. The contemporary fashion suits we see in catalogs or upscale stores with unpleated/narrow pants and slim jackets look ridiculous, especially for work/business. Those kind of suits are worn by some high-profile designers, some naive men, and of course fags. These suits don't excude power and seriousness. Even on casual Fridays, if the suits are not an option, the dress pants should be pleated. I would trust more a man with pleated pants than unpleated ones. As for khakis, they could be both. The relaxed unpleated khakis/chinos look as presentable as the pleated ones. On an athletic man they add more clout. And the older men look younger on unpleated khakis/chinos. Pants for leisure time
Pants for leisure time, or other after work activities look sexier when unpleated. Wool unpleated slacks look sexy on men that have no weight problems. For men with weight problems the pleated ones are the better option. It would cover the physical problems to an extent. Khakis/chinos or other pants look sexier unpleated. At leisure times or recreational activities you want to convey the message of being sexy, friendly, not uptight, and sporty. Hight waist pants are sexy
Women find men with thin waist sexier than the other ones, and I try to keep this in mind. Also, high waist pants create the ilusion of long legs and women prefer men with long legs and generally taller ones. This goes against the contemporary casual fashion, where a lot of jeans and other pants have a low waist. They might look Ok on young men, but on not so young and mature men they give the impression of trying too hard. These are my thoughts.