Yep, you have said exactly what I'm thinking; watching that guy (someone I've known for a little while) eat like there would be no consequences made me question his sanity. He even had a big laugh at my choice of a grilled calamari salad. I'm like, ok fatty dead man walking, I'll come to your funeral and console your family.
Bonkers.
Unfortunately, I know a lot of people with this mentally, and a few of them are relatives. Some just have the YOLO mentality, and others even say "If it's your time, it's your time". They would even recount some people they know that took care of themselves and ate healthy, but still died of a heart attack. What's worse is a lot of them would even get mad if I point their unhealthy meal out to them, and tell me to mind my own business.
Yep, that's the delusion I referred to.