Oh trust me bro, I’ve usually enough tinder in my backpack to keep a fire going for about an hour on tinder alone!!(lol). It is a real eye opener to try and light a fire without using it though. It all depends on where you are as well. Evergreen Tree sap, in its liquid or solid state, will burn like Dammed kerosene when lit and burns at least a solid minute with a thick black smoke (even when just using spark). I use any time I can find it. I found myself this weekend surrounded by stupid sapless hardwood trees.