A little knowledge goes a long way and the more one knows about wine, the greater ones pleasure in drinking it. The more you discover about grapes, regions and production the more likely you are to know what your preferences are and why, and also to try something new. It is a recognised fact that knowledge improves tasting discernment so your appreciation of wines will be very much increased.
Other than being a fascinating subject in its own right and deserving of in-depth study, knowing about wine facilitates its buying, its storage and its serving with the most ideally matched food.