I use a net when fishing from a boat. Not for the fish's sake but for my safety. Attempting to release a fish while leaning over the side of a boat at my age is not a safe practice. When wade fishing I never use a net preferring to remove the hook without removing the fish from the water. Also, I almost never take the time to take pictures of fish. I don't like taking that extra time with a fish to shoot a picture unless I have someone with me that is ready to shoot when the fish is ready to be released.
"The reason you have a good vision is you're standing on the shoulders of giants." ~ Andy Batcho