Emergency kits are great to have in your office, cars, home, or when you go camping/backpacking/hiking etc. You never know what will happen while you are out and it is important to make sure you can stay alive while waiting for help.
Many people are evacuated from their homes on short notice because of fires, chemical spills and other disasters. When you need to grab a bag and go, an updated 72-hour kit will make it easy to get what you need and go in a hurry.
Some items are great to have around even when there isn't an emergency. A Tyvek suit and N95 Respirator is just as handy for adding insulation to your attic as it is for your neighborhood ebola outbreak. Hopefully the latter isn't the case.