I carry a zippo with a butane insert as part of my EDC. I don't smoke, but having a reliable source of fire has been more useful than anything I carry for self defense in terms of lighting birthday candles, melting Paracord ends, etc
I like the butane insert because it allows me to carry a durable Zippo with a lot of fuel and I don't have to worry about topping it off like a traditional. Not "windproof" and not one where you can use it as a candle or stand alone light source since you have to keep the button plunged, but I prefer it over a Bic. Taller flame, more reliable, and more easily serviced, and let likely to break in my pocket.
I don't see much need for a fire making kit since the lighter I have and a pocket knife have belt plenty of fires. I save the ferro rods for when SHTF big time.