I've discarded three or four pair of pants this year from overly large holes in the rear and -- even worse -- in the 'taint' region. I've come to appreciate the sturdy construction and reinforcement in bike specific clothing that don't look like bike specific clothing.
Check out, for example, Outlier's new "Workwear Pants."
It's like jeans, but instead of denim Outlier uses their "Doubleweave Canvas," which is a tough fabric on the outside for great durability, but with a soft brushed inside surface for great comfort. Curved waistand and gussetted crotch ensure freedom of movement on the bike and off.
The price might seem a tad high, but compare made in America value against several pair of disposable pants.
More --> Outlier Workwear Pants.