So anybody who happens to have a compromised immune system gets to fight your personalised microbes, perhaps fatally? How very ... Darwinian ... of you.
Soap and water have saved more lives than any medication, ever. I now have no spleen (6 months ago I lost spleen, gallbladder and half my stomach as well as sundry peritoneal membranes to cancer) and nearly died as a result of post-operative infections. I take daily antibiotics, possibly forever. As a society, we don't just cleanse ourselves for our own well-being, we wash for others.
Soap and water have saved more lives than any medication, ever. I now have no spleen (6 months ago I lost spleen, gallbladder and half my stomach as well as sundry peritoneal membranes to cancer) and nearly died as a result of post-operative infections. I take daily antibiotics, possibly forever. As a society, we don't just cleanse ourselves for our own well-being, we wash for others.