Maybe this is obvious to other people, but it just dawned on me yesterday: liquor is actually more economical than wine. Intuitively, I assumed that wine is more economical because a decent bottle can easily be found for under $20, whereas distilled liquor can easily run upward of $40 or $50 a bottle. But...
One standard pour of wine is about 15 cl, meaning there are five servings in one bottle of wine. For an $18 bottle of wine, that works out to $3.60 per serving.
One standard pour of 40% ABV liquor is about 4.4 cl, meaning there are about 17 servings in one bottle.
Therefore, a $60 bottle of liquor is roughly equivalent to an $18 bottle of wine. This surprised me.
Moreover, the flavor of wine deteriorates quickly as soon as the bottle is opened, whereas most liquor is just fine a few months later. For this reason, I always make sure to polish off or dump out a partial bottle of wine within about three days of opening it. Not so with liquor—although there is a little pressure to use up low ABV items within a couple of months, even if they're in the fridge.
This has all led me to be more willing to give something a try, even if it's a little expensive. If I'm willing to roll the dice on a $20 bottle of wine, then why wouldn't I be willing to roll the dice on a $60 bottle of liquor—especially when, even if I don't end up liking it, there are bound to be several successful ways to use it in a cocktail.