Why is it so hard to think about releasing them in a forest or in a field? They don't eat wheat or corn, so that would be a solution, also they don't eat trees

Why is it so hard to think about releasing them in a forest or in a field? They don't eat wheat or corn, so that would be a solution, also they don't eat trees, so the forest is safe. They will always find what they need in a forest, and in a lesser extent in a field, as they can lunch on whatever decomposed food or smaller animals they find. Very unlikey that they starve to death, at worst they just don't have enough stamina to reproduce, which is the natural way to autoregulate. And a starved insect will slow down its metabolism and then die peacefully, there is no need to "show mercy" by putting it to death lol.