When it comes to the poison of choice, there are two main considerations. The first is how it tastes, and the second is how it feels. All alcohol, in theory, should have about the same effect, but the reality is that different types of liquor produce noticeably different types of feeling when you drink them. Some drinks have a much more complex and sublime effect than others- and whisky, without doubt, heads up the pack!
You can find a connoisseur for almost anything, including varieties of alcohol with no flavor anyone other than a connoisseur would claim to appreciate. Whisky, however, is actually worthy of that level of attention, and for reasons that can be both defined and analyzed.