I agree. Though Patton said, "...Never dig in" I see no viable alternative when defending family and assets.
I don't live in a flood plain or a earthquake prone area nor have we seen a tornado in these parts. We do get a hurricane every 10-15 years or so. But we've weathered those just fine.
'Tis the zombies I'll be girding me loins for.
A Michigan winter won’t be a lot of fun but its got it its advantages. Right off the top it will send a lot of zombies heading for the south which would ease pressure. It also helps with food storage for a few months.