Like age, 50 is just a number. I just like catching fish. I think given your question, consistent fish in the 25-30lb class would keep me happy for a long long time.
But I'll take the 50 if it ever comes.
Three-fourths of the Earth's surface is water, and one-fourth is land. It is quite clear that the good Lord intended us to spend triple the amount of time fishing as taking care of the lawn.