I suspect that in 99.9% or more of all survival situations, a BIC lighter would be more than adequate. If it gets wet, though, it will take some time to dry out, and if it gets smashed (it's only plastic, after all) then you still need to know how to start a fire using only the spark.

Plus you don't want to find yourself lost in the bush and discover too late that when you lent your BIC to that cute redhead in the lodge last night, you never got it back <img src="images/graemlins/grin.gif" alt="" />