Flea,

I do it all the time. I catch a fish or two, then pack it up and do something else the rest of the day. To me it's the hunt, the catching is just a small part of the game. If I catch one line peeler I'm good. I'm not into numbers as it has nothing to do with fishing.

There are some non-greedy anglers that fish.

Two times this month I caught bucks over 20.

They were caught in the first spots I stopped at that day. On both floats only (3 miles) I cut off my fly, broke down the rod and floated to the take out with the biggest smile on my face after successfully releasing each of these gems.
I thought about continuing to fish but why? I was lucky to have caught a fish of a lifetime. There may have been a larger fish in the next run down... Oh well, hopefully some other lucky person will hook it and experience what I did. Maybe it will change their view towards fishing and they will have more appreciation for the resource.....?

Just my 2 cents