As Glenn points out, there has been a paradigm shift in thinking about what you have to take camping. Most of my gear is 10 to 25 years old, and I am a light weight backpacker. I carry the exact same gear in the winter as I used to except I leave a lot of it out. My winter pack (for minus 10F) with food water fuel and tent is in the 27 pound range. It used to be 45 pounds. I simply no longer take 18 pounds of what was formerly "necessary".

In the Summer my pack can weigh as little as 16 pounds less food and water, if I take my siltent - 1 pound.
Jim