That's life! Our earth is filled with living creatures that are interdependent of one another. God made some animals carnivorous, omnivorous, and herbivorous. Still, you have some plants that eat insects!
A plant is a living thing too, according to your logic we probably shouldn't eat them either.
I think the important thing to remember is for ourselves to eat as naturally as possible so our bodies will last as long as possible, avoiding sicknesses and premature death.