Khakis are great, when the weathers nice, for errands, golf, shopping, etc. Â Can be worn with pretty much anything, dressed up or down. Â Knit golf shirt to blazer and tie. Jeans on the other hand are better suited to yard work, garage work, cleaning out the basement, etc. Â But not for wearing out in public, just like sweats. Â Although the "toughskins" my kids used to wear were pretty much bullet proof, and kept their knees from many a scrape. Â So they do serve a useful purpose.