It's complicated.
I live in a hurricane prone area. Our family has lived here for 300 years. We are resilient people who have hurricane prep in our DNA. We know our risk and limits. Up to category 2, we easily stay. Beyond a 2, we assess the direction it's coming to the east or west of us (being on one side or another makes a difference in impact) and discuss the factors specific to the storm and our family.
We live 10 miles inland. When Katrina was projected to come, we were staying at our house until I awoke to a report that winds hit 155 mph while still offshore and predicted to increase. Jumped up, packed up and called my brother and mom who did the same. Storm was abt 18 hours away when we left. Tornadoes spin off and impacts are not just for those who live on the shore.
Many others can not afford to jump up and evacuate. Gas, food, a place to stay (if one can be found) are all expensive. Waiting on the interstate for 10 hours for a 2 hour trip due to everyone evacuating -folks run out of gas, have medical situations, etc.
Local shelters crowded with a few hundred odd people are not a pleasant place to be. Some take care of family who have medical needs and are not easily moved.
Others are essential personnel and must stay for work. Others have crappy jobs they have to stay to report for so they don't lose it.
Some stay to protect homes and businesses from looters and to shore up damage ASAP. We were fortunate to get back home the day after Katrina. Shortly after we got back home, the interstate we just traveled had to be closed to incoming traffic due to damage and debris. We were glad to be in our home, even though it was hot as he## and we had no power. Nothing like the comfort of your own humble place in a disaster.
I was able to clean out the nasty refrigerator and keep it from becoming an issue. We were able to start making repairs on our roof and help family and neighbors start their repairs and clean up.
Some don't listen to forecasts, or trust forecasts-false alarms happen. News people overly hype a storm and the next one, people don't listen because they were wrong before.