That's interesting; care to elaborate, out of genuine curiosity?
I don't care about fashion, even a little bit. I don't agree with grand-parent post that you need fancy clothes to attract a mate. I'm happy to buy 5 copies of exact same thing that fits me. But in terms of sheer physical comfort, I'm endlessly perplexed by casual fridays and even more so by e.g. people who change out of business casual clothes and into jeans the millisecond they're home (which is basically everyone I know, so I admit I'm clearly the exception:)
A tall lanky male, I find basic business-casual pants the most light weight, practical, not-in-my-way comfortable, well breathing, perfect temperature pants. Jeans are way too constraining and hard and inflexible! In 90% of the weather they put too much heat and pressure on my nether regions. In both cut and material, they were designed to be hard-wearing, not comfortable, so I assume it's psychology that has people prefer them. And most sweat pants don't breathe as well as my lightweight casual business dress pants either, and don't fit me around hips/waist - they either fall off, or are too tight.
The business-casual pants are "inappropriate" to wear at home, so I don't, but I put them on anytime we really go anywhere. People make fun that I'm "way over dressed", and fair enough, but for the life of me I don't understand what is "uncomfortable" about lightweight business casual pants and loose, not-tucked-in polo shirt.
(not to mention that "looking good" is not necessarily a button down shirt and dress pants to begin with, but that's another relevant conversation:)