Size limits are to prevent over harvesting mature spawning fish. As a conservationist we all need to realize its about having healthy fish, size limits and creel limits are what ensure that happens. As sport fishermen we love to catch those big ones. The biologists job is to first ensure the fish have what they need in a fishery from food sources to cover to spawn areas, then that information can be analyzed to provide the regulations with the adequate size and numbers needed to be harvest to keep the fishery in balance. Its not easy sometimes, just talk to the guys down in MS.