My 12 year old grandson carries safety matches, waterproof matches, magnesium stick, flint and steel and wants a butane lighter. On a multiple day backpacking trip with all the tossing and jostling and bumping together those fire starters get and no spontaneous ignition. Every member of the Journey of Discovery carried a Possibles Bag with flint and steel and no accidents.
I guess I'm just too worried about other things like whats for lunch, does the store at our next campground still carry the fabulous ice cream they did the last time we were there.
Oh yeah, one last thing, lighting an old sulphur match required a lot of heat, therefore, the denim pants of old were used because they didn't break the heads off, boots did.