I joke around a lot about tequila, but a bottle will last me months. When I drink, two in and I'm pretty snockered.
There really are a lot of us that either don't, or don't much. A bottle of whatever would last my parents for years. Now that my mom is diabetic she won't even have a glass of wine.
What I lie about is that often my friends will give me some of their leftover pills of various kinds. As I don't use any of them with any type of frequency, I don't see that it's really a thing. Were I doing it often, then I would.