Easy to use (no button to hold down, just spin the wheel), easy to do maintenance, will light unless you got it really really wet or forgot to refill it.
I'm suddenly reminded of the Zippo scene from Four Rooms.
I don't smoke cigarettes anymore, but I did for many years. I'd lost my old Zippo and bought myself a new one (straight from the company) about a decade ago. After daily-use, then sitting in a box for three years, and now using it a few times a year while camping, it works perfectly and looks practically new.
Easy to use (no button to hold down, just spin the wheel), easy to do maintenance, will light unless you got it really really wet or forgot to refill it.