Well...it depends on the stage of the cancer (metastazes etc., affected lymfatic system...)
If I could choose of these 2 diseases both in their earlier stages, I would surely take lung cancer, because: There is cure. If surgery isnt possible, there is still chemotherapy. If this all fail, they can remove the one lung or its part...also, there is at least chance to be healthy again.
Speaking as one who has ALS and had a Biopsy for possible Cancer and who has to wait a week more for results to see which disease is going to kill him, I have no idea why anyone would ask such an inane question. But seeing as you asked, I'd rather not have either.
After two biopsies the Surgeon called a few minutes ago and said the biopsy was negative and there were no cancer cells. A benign lump that should go away in time on it's own. So as you can imagine, things are a bit more upbeat here now. Just might have to celebrate with a glass of red.
A much happier AL.
-a hero as a firefighter, helping solve the mysteries surrounding your own in your own town and how you have helped them with their lives, your plight to help so many in their journey through their struggles with ALS, your support with this site, your willingness to be so open to others with photos and things in your own journey that really help real people, reaching out to complete strangers, naming yourself as a grandpa on this site (tells a lot). I am sure your family loves you so much. They are so lucky.
Thank you. You touch my heart and make me miss my own grandfather.