If my hubs ever asks me if I'm going overboard, I politely ask him to step his ass out of my life boat, cause I'm not feeding or fending for those not willing to look after themselves. Think I've only had to do this twice and it was right after we were married.
Seriously though, it's not as expensive to prep as some sites want you to believe. There's no good reason to buy the 'year supply of food', unless you are dead set on shopping for what you like to eat in the amounts you want to eat them in. Same with water, clothing, and other things.