Why do lighters use butane instead of other hydrocarbons

Why butane?
this a chemistry question so please make reference to structure/boiling points etc if possible

Because Butane C4H10 is a liquid at atmospheric pressure and normal earthly temperatures AND it still has a high enough vapor pressure to keep a reasonable amount of Butane gas in the 'airspace' of the lighter. This is safer and easier to use.

Any lower weight hydrocarbon (Propane, Ethane, etc.) would not be a liquid on earth at normal pressures and have too high of a vapor pressure to keep safely in a lighter. Any higher weight hydrocarbon (Pentane, Hexane) would still be a liquid but would have too low of a vapor pressure which means not enough gas in the lighter space so it won't light.