Wine exists on a broad spectrum with so many variations of taste! Everything from the age of the wine, geographically where it came from (different soils, altitudes, and climates have massive influence over how wine tastes), how the winemaker chooses to make the wine, the hundreds of different grape varieties, and what style you personally prefer makes the issue not that wine "tastes bad" as you would say, but that you haven't found a wine that suits your taste!