It's all about degrees of disaster. If there's a real disaster, I wouldn't give a rodent's behind about my electronics and I too would be happy with my emergency stash of food and water.
You think so now, but you need recovery plans as much as immediate survival materials and equipment. Getting back to normal life is the real goal after a disaster.
I've been involved in several disaster recovery efforts, including earthquakes, floods, fires, and tsunamis. Each of those events had their own challenges, but there were some clear and consistent ways you can prepare to improve the eventual outcome.
1. Don't be there.
Seriously, this is the best option if there's ANY warning at all, or even post-disaster if you're mobile. Have and share a plan with pre-established criteria for getting out. Know what you're going to pack, what you'll protect in place (eg, plastic wrapped tools etc), and where you're going to go well before any threat is on its way. Stick to the plan.
In every scenario so far, the most robust means of communicating and getting help has been SMS.If you can keep your phone charged for the duration, your chances of getting help (initially from first responders, then from community and family) is vastly improved. SIM cards are surprisingly robust, but have more than one phone available (eg, an old handset in sealed in plastic). Most importantly, have a car charger or two for your phone. Even wrecked cars can top up a phone battery.
3. Social Networking.
Stay in touch with friends and neighbors. If you're absent minded or mostly antisocial, have a list/schedule of people (in robust storage, and preferably hardcopy) to touch base with every month or two.
Don't underestimate the importance of this. Boredom and depression can be devastating, so plan on ways to keep yourselves informed and relatively cheerful.
Surprisingly, this has mattered less than I expected as recovery efforts generally take document loss into account. Having said that, things like insurance records etc are worth having copies located in several places (eg, with family or left at work).
Disasters are inherently somewhat unpredictable, but human needs are not. You can make life a lot easier for yourself if you choose to.