This is true for me as well except I will wear them two or three times (as long as I don't get anything on them), then put them in the dirty clothes basket and pick out a new pair.I usually wear them two or three times before washing them.
I turn mine inside out, wash them in cold water on "delicate".Jeans aren't made to be washed regularly, it would only make them loose their colour. Same things with suits. I don't wash my suits unless they're dirty. And when I do wash them, I make them have a "steam bath" (I don't know if it's the correct word in English).