If you have pulmonary fibrosis, do you ever wish you had gotten lung cancer instead?

My 70 year old dad was diagnosed 2 years ago (approximately) with PF, and had been doing fairly well until winter. He is starting on a regimen of 17-18 natural supplements, as well as a juice that is geared towards cancer patients but is supposed to strengthen the immune system. He was a 40+ year smoker, finally quit for good about 7 years ago. I can't help but wonder if lung cancer would have been easier to cope with.