Congrats on your success, however, b12 is not a bacteria. It's commonly either methylcobalamin or cyanocobalamin. And while I agree it is generally better to get nutrients through diet, for some it is impossible. People with pernicious anemia literally lack the ability to absorb enough b12. That's not too take away from your story, but in your enthusiasm you paint with a broad brush. Supplements are no more aggorant and playing with nature than anything else in Western medicine, and quite a lot in Eastern medicine for that matter. For some it is the only way to get enough needed vitamins and minerals.