I figure that fire making gear can be so small and compact, why not carry it? Of course a couple of days a week I drive 45 miles to work through mostly rural areas, so for me, I keep fire making things close. I find it highly unlikely that I would even find myself in a situation where I would need them to survive, but since I travel so much in rural areas, the possibility, however small, exists. I carry a mini Bic, mostly for melting the ends of cut paracord, but mostly it's a Sparklite and Tinderquik in my PSP. Even adding a BSA Hotspark or Magfire would be little trouble in one of my EDC pouches carried in my cargo pockets. A while back, I questioned the need/usefulness of a fishing kit, because I don't like fish. One response was "it's small and doesn't take up much space or weight, so why not?"
I say the same thing with fire making gear. Of course, my "urban" area (hometown) is about 35k people. Surrounding areas, population is a little over 100k. If you're living in the middle of a major metro, your needs may be different <img src="/images/graemlins/smile.gif" alt="" />
Of course it's always nice to be prepared for that TEOTWAWKI scenario, where you're forced to burn priceless ancient books in a public library to keep from freezing to death...need something to light it up! <img src="/images/graemlins/grin.gif" alt="" />
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Ors, MAE, MT-BC
Memento mori
Vulnerant omnes, ultima necat (They all wound, the last kills)