I’m thankful for yeast. It’s so, so convenient that we have a non-pathogenic bacteria which will eat pretty much any simple sugar, can be found on the surfaces of most fruits, and is essentially effortless to cultivate, which also does a bunch of useful things like leaven bread and make a bunch of delicious short chain fatty acids (both in bread and on their own, like in marmite) and make alcohol (although that one m…
Yeast are not bacteria. They are eukaryotes.
That said, just as the other poster I'm also thankful for pedants like yourself. This is a mistake I probably make myself all the time.