I've read articles talking about the panic and hoarding going on. I don't think loading up a shopping cart is a sign of pure selfishness.
I think it's a sign of being ill-prepared.
If there were two cities,
City A where people were encouraged to keep a 3 month supply of needed goods
and City B where people don't buy too much of anything to avoid looking like hoarders,
Which would you want to live in should a disaster occur?
Finding a good book to read is like digging through rocks, looking for diamonds.