Jim,
I agree that people can get carried away by C&R, but, again very respectfully, I disagree with your assertion that there are a lot of fish out there. Whenever I go fishing, I am lucky to get a bite or two, much less actually see a fish or get one to take what I am throwing at it. That’s proof enough that fish must be getting rare. 
OK, I am pulling your leg some, but in all seriousness everything that I have read or seen says that the numbers of fish are steadily going down from over fishing. Granted, that’s from the commercial boys, I highly doubt weekend anglers are having that great of an effect, but I still think whatever we can do can help.
As I said, I mostly do bait fishing, mostly because I am fishing with my son who needs a lot of my attention (i.e. he’s the one fishing, I’m trying to get him untangled, re-baited, etc. and by the time I get my line in, I have to hand my rod to him while I get him out of whatever mess he’s got his into), and although we don’t get out a lot, over the past few years, I have probably had 3 or 4 leave the hooks in. Plus I probably had 3 or 4 times that many when I was a kid fishing with my dad. Flies may be a different case, I don’t know, yet to catch a fish on a fly, as I said, don’t get out to fish by myself, when I do, the fish don’t like what I’m throwing. 
In regard to C&R, in my case, I practice it for very practical reasons, above and beyond making sure others can enjoy catching a fish again, and that’s because 1) I don’t know when I or my son are going to catch a large enough fish to keep, therefore, I don’t want to carry a cooler full of ice for nothing, and 2) I don’t want to deal with cleaning Mr. Fish.
I will make exceptions, like I’d like to get out on Lake Anna (VA) in my kayak and see about catching wipers for the dinner table, another would be if we went to trout waters, but they’re quite a haul away from me.
Paul
PS, did not see anything inflammatory in your post at all.