Oh, for the love of little green apples.
I wear yoga pants* on weekends in the cooler months quite often. They’re at least as (and sometimes slightly more) comfortable as jeans, cover precisely the same amount of skin, and are approximately the same level of snugly fit, except that the yoga pants don’t get all saggy around the knees after a few hours. They also are much more forgiving to actual body movements - like bending over to put things into or take things out of shopping carts, automobiles, shelves, etc. And I don’t have to wear a belt with yoga pants, because they manage to stay up all day without starting to creep inevitably downwards as the day wears on if I’ve forgotten to put on a goddamn belt again. I haaaaaaaaaaaaaate having to hitch my goddamn pants every couple of minutes because they’re slipping inexorably off my hips as I go about my day.
I wear them because they are practical, ridiculously comfortable, relatively inexpensive (this is important for me since I’m hard on clothing), and no more or less modest than wearing a pair of jeans that actually fit. Also, I only need one freaking outfit to complete a whole day of errands and chores. I can wear them to do my grocery shopping, clean the bathroom, weed the lawn, do laundry, scrub the kitchen, go to the pharmacy, pick up dry cleaning, or whatever random errands I have. I try to keep my clothing changes to a minimum. Therefore, I want my casual clothing to be clothing I’m happy to lounge around my house in once I’ve finished doing all the things I have to do. Yoga pants are more comfortable for lounging around my place than jeans are.
Mostly, on weekends, if I don’t have particular evening plans, I’m not super interested in changing clothes at all. I want to put on one outfit and then wear it all day, so I want it to be an outfit that I’ll be comfortable in when I get to the glorious portion of my day when the chores are done and I can plop my ass down to play computer games or watch TV with my husband.
Even when I was younger, single, and put some thought into how men viewed my clothing choices, that consideration didn’t rise over maybe a 20% level of consideration. It was lower on the list of considerations than, for example, “Are all the important bits covered?” “How do I think I look in this?” “Do I look good in this color?” “Do my girlfriends think this is an attractive look for me?” and “If I wear this, what are the chances I will accidentally flash the world?”. It mostly was higher than “What are the odds I manage to drop something on this outfit and ruin it, therefore costing me money I can’t afford?” though.
*To be scrupulously clear, the yoga pants to which I refer herein are the sort that are basically non-fleece-lined sweatpants without the God-forsaken heinous elastic band around the fucking ankles. They’re mostly navy or grey or black, and the fit is pretty much identical to well-fitted jeans. They’re some sort of jersey-knit fabric.