Yeah, we were lucky. Cars can be replaced, but people cannot.
I guess I always figured, a tornado is a mile wide at most, and lasts for 45 minutes at most. Compare that to a hurricane at 600 miles wide and lasting for days, or to an earthquake that can destroy an entire region very quickly, or living in an arid desert designed to burn on a regular basis, or living in Seattle, which is 50 miles away from two active volcanos, and I will take my chances with a tornado any day. I've lived in the midwest for all of my 24 years and have still never seen one. I've had plenty of them within 10 or 15 miles of where I've lived, but never come close enough to do any damage. We didn't have a tornado on Sunday, just ridiculous straight winds.
Iowa City is a college town, so we have a bunch of folks who aren't from the midwest and they freak out whenever the sirens go off. I always check the radar, make sure it isn't coming towards us, and then go outside and watch the storm.