This is interesting reading about guilt. Not sure why, but I never really feel guilty about smoking or getting lung cancer.
People always ask when they find out that I had lung cancer that smoked and I always tell them yes, but I also lived in a house with smokers (parents), visited relatives that smoked (uncles that died from lung cancer), worked around chemicals without respritory protection, and lived in a neighborhood when I was a child that has had 5 people I know die from a cancer, and another 6 that have had cancer and survived.
While I know I've made some bad choices regarding smoking, I've never felt that smoking was the primary cause of my cancer. I may be dillusional in my thinking, but I feel that smoking was just a piece to the puzzle.