If you've ever debated it in your mind, read this article:
http://www.trophybassonly.com/id50.htm
That's just one small example of how catch and release works on big fish. I have more than a dozen more comparison shots on my computer of fish that I've caught and released and then seen caught again, either by myself or by someone else.
Two years ago I caught two 10lbers on morning, a 10.2 and a 10.95. A week later I went to that same spot and caught BOTH fish again. Not on beds, just casting swimbaits and jigs. This kind of stuff happens way more often than people realize because the number of double digit bass in any given lake is much lower than people really think.
Be a part of the catch and release deal. You'll feel so good about it in the long run, and odds are if you fish for the big ones enough, you'll catch those same big bass year after year.