It's a fact that we can't avoid killing. When we boil a kettle of water we kill bacteria, when we walk on the street we step on insects, even when we blink the living beings on our eyes are being affected. Life isn't pretty.

But the question to me is 'How can we reduce the suffering we are giving to other living entities within functional boundaries'.

The suffering animals go through in slaughterhouses and battery farms etc... is far greater than the suffering of plants when we take a fruit from a tree or dig up some vegetables from the ground. Does this not make common sense?