One of the most useful things for many survival situations is fire. And there are many ways of starting a fire.
Under ideal conditions, matches are perhaps the best choice. They are simple, small, light, cheap, and stored correctly, will be reliable for decades. Unfortunately, survival conditions are seldom ideal, so as your primary method of fire starting, they are not a good choice. As a backup method, they are excellent.
For details, see my article: https://www.survivalsullivan.com/best-survival-matches/