I have 2 MRE’s. I’m not worried about getting caught in an ice age I’m worried about getting stuck at work for 3 days.
I've got a couple granola bars. I'm more worried about getting stuck in traffic with screaming, hungry kids than anything else.
Work has vending machines. I pass a gas station every two miles. Food is relatively easy to come by in a disaster scenario, for the first couple of days.