I mean, big parrots can easily live 70 years. But that's not a bad thing, I'm always confused with people who want their pets to die fast.

But on average, parrots kept as pets die rather fast compared to how long they can live. Most people with cockatiels have them die before they are 20, even though they can live at least up to 35-40. But then again, you see how people take care of them and it's no surprise that they die fast.

If your cockatoo lives long and healthy, it's a positive thing, and it means that you and your wife are taking proper care of him. But you should hope for him to live a healthy hundred years!