Hey, paranoia pays! - at least when it comes to firebuilding capability. When you look at the total weight of all these widgets, there is probably nothing else in your gear which is as effective for the weight carried..

My first experience in SAR was a prolonged search for three Boy Scouts missing after a brutal, unseasonably early snowstorm near Tucson in 1958. Weeks later, when their bodies were finally located, it was apparent that they had tried to light a fire, using tissue paper, unsuccessfully. I think that started me carrying lots of fire stuff.

A fire is absolutely key in survival. Only exception might be a water source in desert conditions. Shelter ranks high, because you may not get a fire going unless you have a windbreak of some sort, as a minimum.