If the spider is in your home without consent I support trapping it and kicking it out.

If the spider or mosquito is trying to bite you, then I support your self defense actions much like if a human was trying to bite your arm you’d be in the right to use force.

I agree with your point that it’s possible but not applicable to 99.9% of people

Replace cow with human and see if it passes the test.

Is it ethical to give a human a scarf? Yes. Well it’s also ethical to give a cow a scarf.

Is it ethical to shoot a human in the head? No? Well it’s also unethical to shoot a cow in the head.

Two things.

1 - It’s the backyard chicken problem. Yes your mom doesn’t harm them, but when producing at scale people care less about not harming them

2 - Replacing their honey with sugar is not good because it lacks the vitamins and nutrients that honey has. It’s very possible that you don’t take all the honey so they are never harmed by the actions, but when farming at scale people will absolutely push the limit.

That’s awesome!