I don't know about you but it feels icky to me to wear dirty pants. I could probably get by wearing them two days in a row. If I have one paid of jeans, im washing them at least every other day. If I have 7 pairs of jeans im washing at least half of them once a week. I'd rather have 7 pairs of jeans. They last long enough for me(a few years). Maybe its just because I dont have to taken them to the laverie (as the french would say) but clean clothes just feel better.