I have firsthand experience with this, and yes, that was my last thought. I was young and foolish, and alone in the wilderness during the winter. I drank some bad water and became very sick during a blizzard, and while searching for shelter, I finally became too weak to continue. I was hypothermic, and coherent thoughts were difficult, but my last thoughts were peaceful acceptance, and appreciation of the beauty and power around me. I cocooned up and drifted off, and I'm still here somehow.