if there is a cat in the jungle that has fallen on a tree branch or got a disease you cant do anything about it
Yes, but if that cat was living in my home and he fell out of a tree and broke bones, he would be immediately taken to the vet. If my cat gets a disease, immediate vet attention will be provided. If my fish get a disease, I take care of them immediately. The only difference in your example is that the animals are under MY care, not mother nature's. The reason why I adopted my cat from the Humane Society was to give him a better home than living on the streets or being put down.
Rudy, I'm not saying that you or your father are purposfully killing fish. That is not my intention at all. I was mearly implying that the disease will kill your fish if they are not properly medicated (salt and temp) and watched closely. If all of the fish in your tank die and you go out and buy new fish and put them in the tank, they will eventually contract the disease. It is in the water. It probably came from the store that you purchased the fish from. Do not take my posts as a personal attack at you or your father. That is not how they are intended.