To throw a different perspective at you, one man’s trash is another man’s treasure.
The only place I’ve seen stuff I’d actually call shit is in the internet marketing realm. Erm… possibly also seo.
7 billion people on the planet and roughly half of them have internet access. There’s an audience for almost anything and everything.
As a marketer, I wouldn’t promote Yeti Porn, but it sells like crazy apparently.
Ever heard of Regretsy? Now defunct, it used to make fun of some of the worst “shit” on Etsy. Some of it sold really well.
Sometimes the marketer isn’t a good fit, because they don’t know how to find the right audience. That’s worth considering, too.