I don't care what the logic or excuse is about nature. I don't agree with it and i would never make a system like this as it's too cruel and perverse. i would think it's more ethical then to not create it at all. The only real justice will be when this entire system and universe ends and all life in it dies so this madness and inherent foundation of immorality upon immorality ceases to be.
I would agree with you if you are referring to life
The non sentinant component of the Universe could continue with no ethical problems