relearning,people keep telling me "I was born a sinner" ,I do not really know what they mean.
As far as I know,I was born a baby not knowing anything.
Now when I am growing up(Actually I am a grown up),I know when I have done wrong because of a built in mechanism inside me called "Guilt".
I also know ,by instinct some of the commandments .
And I know that I am no saint.
Hence the need for all the help I can get from my Creator.
Coming back to "any harm that happens with us is only because of our sins",even if it was so, and some of it may be so,I fail to see a connection with common sense of health and safety.
So I agree with you, sometimes we tend to be naive,romantic and completely get things wrong.
I am sure GOD knows a lot of people kill animals and insects because of a "need" and sin has nothing to do with it.
So for me ,we should not kill animals deliberately for no purpose other than being horrible to them/annoyed with their existence next to ours.
In other necessary conditions there should be no problem,like eating and health and safety reasons.
GOD bless.
Peace.