I believe that frogs will do well at only one temperature, level of humidity, etc. The reason breeders try to replicate natural conditions is because several species require specific keys or changes in the weather in order to breed. This is the same for other amphibians as well as frogs. An example would be like a period of dry condition followed by a period of wet conditions. In the wild in several places, there is a dry season which is not suitable for raising tadpoles, but this will be followed by a rainy season, in which conditions are perfect for laying eggs and raising tadpoles. Frogs are programmed to recognize these changes so they will breed only at times when conditions are optimum, and often won't breed if these conditions aren't simulated in captivity.