One of the things I like about using my ferro rod is that I can save my more limited quantities of lighter fuel and matches. It also works when it's wet and it's a little more satisfying. It took a while to get competent with it, but cotton balls, birch bark and my alcohol stove light so easily with a spark, that I've made it my primary method in most instances. My BIC does get a lot of use, because well, it's super easy too. Honestly, on a average day, I don't see either method being easier or more convenient than the other.

Disclaimer: I'm usually out with my kids and want them to practice and be good at all three methods - bic, ferro rod and matches. We're starting to learn flint & steel too, but that's really just for fun and fire prep discipline. I spend more time focusing on teaching them good fire prep, than I do the actual lighting of it.