is it unethical to kill bugs?

[Cyan]

Is it ethical that our immune system kills trillions of bacteria and small bugs throughout our life and we do nothing to prevent that. Should we strive for a digestive and immune system that simply expells living bacteria as they are, I would prefer that, it would be a bit messy as everyone is breathing bacteria but maybe it wouldn't be different from toilet use, I feel bad for those bacteria, that being said, I tend to avoid killing bugs and sometimes have long conversations with them and they sometimes bring me new information, they are very sentient once you get to know them, a being with 250.000 neurons is very similar to a general with 250.000 people to command, so the leap was for me a no brainer, they are like respected generals doing their business. Hope that helps.