By slightly cooling your drink, it gets more delicious and easier to drink without watering down or “ruining” the liquor. When you try to do this with ice, you are accused of being a “bitch”. But no such accusation can be used if you use whiskey stones. You are all of a sudden cutting edge. A connoisseur. Trendy even.
However, avoiding scorn and looking like the superhero of getting crunk off of fancy shit isn’t the only reason to abandon the ice and drop a couple of whiskey stones into your drink. It really does suck when your drink is watery towards the end. Whiskey stones actually make your drink taste better. As I mentioned above, they help to unlock your fancy bourbon’s flavor. That and you have to put up with less shit from others. It’s win-win.