I am the ONLY guy I know that still uses a zippo for EDC.

I dont smoke, but I always use it daily for melting the tips of rope, burning threads off etc. I usually only have to fill it every two weeks.

Zippo makes a handy little metal bottle that fits on a keychain which will hold a spare two re-fills of fluid, a spare wick and 2 spare flints. When heading to the field this gives me 6 weeks worth of zippo time before I need to consider breaking into my back up BIC.