New Mexico has increased the length of time you can hunt this year. I believe they are giving hunters a 1/2 hour before and after sunrise and sunset. I have no issue with before sunrise. It is easy to see if you missed or wounded and animal and you have fresh daylight for tracking an animals that is part of a group or small herd.
My issue is the western bow hunters that take 60 to 80 yard shots, muzzleloader hunters trying to stretch yardage in the best Elk/Deer areas to 250 and 300 yards and rifle hunters who try to "get one in him" before dark. Evening hunts often present the best opportunties. I'm sure there would always be these same issues with normal shooting times, but extending into the evening hours is really going to push the limits of ethics for a lot of people that don't hunt frequently or feel they may never get another drawn tag or chance.
I attached a picture of an Elk I shot at the end of the day in legal shooting time. You can still see light in the photo. Too pull the trigger on an animal like this another half hour later makes no sense.