I completely agree with you, I HATE redheart. Everyone in my town buys it, but I think it has to do with the fact that they all crochet. Knitters seem to care a little more about their yarn choices, crocheters seem to go for the cheapest yarns like redheart "supersaver" (no offense to crocheters) maybe this is just the crocheters I have met, even though there are many.
But I think everyone has that aunt or grandmother or neighbor who has crocheted them a big lumpy afghan out of redheart and then gave it to them as a gift(?). It ALWAYS goes in the closet and is hardly ever seen again.