Have you ever had someone with more experience that you actually taste the beers and tell you if anything is wrong? For all we know you're sampling your beer too soon, tasting green beer, declaring that there's something wrong, looking into some book, believing that's the cause then dumping your beer.
We don't even know if you're dumping it before it's even in the bottles and throroughly bottle conditioned.
Have you ever just tasted your beer, tasted whatever you thought was wrong, but just put the beer in the closet for a month or two or or a year and revisited them to see if whatever you thought was wrong was even still there.
I see this so much with newer brewers, declaring every batch off,
before they've even given the beer a chance to actually finish the process.
I call it "Noobitus Hypochronditus," the tendency to just jump the gun and declare a beer bad waaaaaaaayyyyy too soon in the process.
Are these "dumpers" even making it into the bottles, let alone getting to sit for a couple months? Some beers may actually take up to a year to come into their own....or at least 6-8 weeks in the bottle sometimes...not that there is anything wrong, just that the flavors need to come together and the yeast to clean up after itself.
My experience with answering questions daily of new brewers is throwing off alarms that lead me to believe that your the kind of slightly impatient newish brewer who expects the first sip of a beer to be perfect, but who doesn't give them enough time for that to happen, because they've declared it bad, and dumped it. And then looks around for all these reasons, then jumps on the latest one he finds...when in reality the only thing that was wrong was not letting the beer clean up.
It really is hard to ruin beer, despite what we do it seems are beer survives....And I don't think you're a cursed brewer that seems to have constant bad batches because we don't...I think you may think you have bad batches, because you're declaring them that way before they've even gone through their complete journey.
Please read
these stories of folks, just like you who thought their beer was bad, but instead of dumping, they finished the process, and left the beer alone for weeks or months or even years, and came back to find their beer was delicious.
In all my years on here, I've never come across folks with consistanly bad batches of beer, OR a lot of true bad batches of beer, but a heck of a lot of new brewers who THOUGHT they had problems when there really was none.