Sure, there are many problems with the concept of Catch & Release but the one I am currently addressing is

That it rewards stupidity.

Oh, I know, we reward stupidity all the time, it's called Government (any party will do), but if we want good fishing we shouldn't put the stupid fish back. Perhaps you thought you caught that 16" rainbow because you are a clever fisherman. I thought that of myself long years ago; but I came, inevitably, to the conclusion that it was not my angling skills, I was just finding all the most dim-witted trout. Now, if you release that mentally challenged fish into a large frying pan (with butter) he will taste just as good as the smart trout you didn't catch and you will be improving the trout gene pool; but if you put him back in the water, you are fighting Mother Nature and natural selection. Never mess with Mother Nature!