They do last longer. Funny, because I just picked up a pair off the sale rack at Tractor Supply a month or so ago for $9.99. I'd have gotten 2 pair, but they only had one in my size. Stiff as a board, reminded me of the old Sears jeans we wore to grade school, all stiff and usually rolled up cuff on the bottom.
I usually like the fit, and price of Lee carpenter jeans better than Levis, and they make the unwashed ones too. If you want them to last even longer, hang them on a line to dry. That big ball of lint in the dryer screen is a layer of your cotton clothing, every time you run it. I use the dryer for dress clothes to be wrinkle free, but jeans, t shirts, flannel shirts, etc, go on a line in the bsmt with a dehumidifier running. Shake the wrinkles out when you take them down. Less shrinkage & lint, and the color stays darker, and the shirts are already on the hanger:thumbup:. That's my laundry secrets.
JT