OP is a bit extreme in his conclusions, but not entirely incorrect either. Insofar as I've experienced, there's a mostly finite amount of goodwill that will go

OP is a bit extreme in his conclusions, but not entirely incorrect either. Insofar as I've experienced, there's a mostly finite amount of goodwill that will go into commenting. Extra comments once that limit is reached tend to be sloppy or useless. Essentially the same for unit tests.