There are many benefits and protections to travelers.  Generally travel insurance protects your non refundable costs if you have to cancel your trip for a covered reason, offers coverage if your trip is interrupted, covers out of pocket medical costs and an emergency evacuation due to a medical emergency, along with many other benefits that can offer you peace of mind when traveling.  Knowing you have protection against unexpected events can make your travel less stressful.  The specific benefits can vary depending on the plan and underwriter.