Isn't it the nature of cotton fabric to shrink? And generally reds, batiks, black, navy blue are bleeders. To prewash or not is as personal a thing as religion, politics, and usually the reasons for doing, thinking cannot be argued, discussed or changed readily....this could go on infinitum- not the hill I want to die on. Sort of like " my sm is the best because...." But interesting to read the reasons why or why not.