According to democracy, Vodka is the dominant spirit. I would have agreed . . . until I turned 17 and discovered other drinks besides Mountain Dew and vodka.
If you’re starting a bar, all you really need is gin and scotch. If you want something else, add Rye or Bourbon. As for liqueurs, all you need is vermouth – both sweet and dry. Spend the money for the nicer vermouth.
And for God’s sake, if you have vodka in your house, donate it to some thirsty high-schoolers.