Mahavira, an ancient Buddha (contemporary of Gautam Buddha) on whom base teachings Jainism was founded used to say we need to respect all living creatures. Jainism today has more than 4 million followers in India.
He used to sleep in one side of his body, and he didn´t move during the entire night, because he could kill an insect on the process.
He also never walked in grass, because many insects live there.
Plus he was always naked (I don´t really know the reason for that, but we all want to do that unconciously).
I´m not saying that killing insects is good or bad; killing an insect is killing a living creature, just that, it is not something to catalog as good or bad.
I used to burn ants when I had a lighter in my hand; hell, I burn anything at reach when I have a lighter in my hand. Now I feel just a little bad, so I don´t burn insects to death anymore
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