I've always made a practice of serving my friends whatever they want.
I always serve my friends whatever they want based on what I have. I have a wide variety of bourbons, ryes, other spirits and mixers plus beer. They can usually find something they like. The only thing I don't normally have is wine. If they ask what to bring, I tell them an inexpensive bottle of something tasty for the ladies (those that don't drink mixed drinks or beer, of course).