A few things that may have already been implied or stated by other posts:
1) Burn time of various tinders. If your wood is very wet you may need a tinder that will burn long enough to dry out your kindling enough to get a fire going.
2) Knowledge = survival. The more you are exposed to, the more likely you will be able to light a fire under different situations and under very adverse conditions. Limit your exposure and you may limit your survival.
3) Some people pack certain types of tinder because they also serve other purposes - for example some pack PJCBs because they can also use it to sooth chapped lips.
That said, I suspect most everyone has a preferred method (or methods) they usually use as well as preferred materials. I am usually carrying a spark-lite, bic lighter, magnesium bar and flint, and strike anywhere matches. For tinder I am carrying tinder-quik, candle, paper and a thin piece of cardboard. There may also be a cotton ball or two as well; I will use these for packing material to occupy extra space and quiet any rattling (although now that I think about it, I will probably just add some more tinder quik instead). Whatever, KEEP IT DRY.
I am a bit surprised no one pointed out the obvious advantage to a piece of rubber; it's waterproof, but not so much tinder as kindling.
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Uh ... does anyone have a match?