Why God Can't Create Animals?

God creating a natural system will inevitably intend to entail things that are more or less perfect in competition with each other. I worry that the concept of animal, that the pain, for example, like God could create animals, instead of having pain, what if we just had a heads up display that told us hand is burning, move hand? Well, a lot of us would ignore the heads up display and our hand would become useless. Why can't God make people that are free but don't do evil? We qualify humans so much, they're not really human or free anymore. That's my point is he could have said that differently from the get go with different rules.