As I don't have any share in the BIC company, I don't really care if you like them or not. <img src="/images/graemlins/grin.gif" alt="" />

As others pointed out, they are so cheap, small, easy to use (by anybody - no special skills/training required), works quite well very often, etc... etc.... for not having one in each kit.
(or one similar from another brand)

And for sure, they shall NOT be the only fire source in those kits.
Add Spark-lite, ferro-rod, windproof matches, Zippo lighter, metalic match, fresnel lens, butane torches... what ever you like and/or can buy, but you are absolutely right not to trust only one fire making device.