The wine world is notoriously pretentious.
It's good to know locations, varietals and aging a little because it can help you narrow the window down to find a wine you'll probably like well enough vs ones you won't. I for example, tend not to like Malbecs. Why? I dunno, just something in the flavor. I also don't like Mountain Dew.
Wine can help accent or suppress flavors in your food as well. Just like drinking beer with pizza tastes good, you probably wouldn't drink coke with your morning cereal.
If you really want to get into wines, there seems to be a correlation between rating and flavor complexity. And there's all kinds of ways to taste (or miss) complexity in wines. Just like a good bbq sauce has elements of sweet, sour, spicy, etc., wine can be more or less complex in flavors. But not everybody likes complex flavors and that's fine. That's easier in fact since complexity is usually a result of more expensive wine making processes like aging so your local Two-Buck Chuck might make those people happy. But detecting the differences or preferences for flavor complexity is like detecting the differences between two different batches of your grandmother's home-made Spaghetti sauce. You can probably describe it (the first had more garlic, the second more basil), but absolute comparisons are really impossible and don't really matter all that much. It's like asking "which is better a sponge or the number 7?"
Something revealed to me during trips to various places where a glass of wine with lunch or dinner is normal, is that wine is just another drink. Some of the better meals I've had were had with a 2 euro 1/2 L carafe of the local watered down table wine. In these places, wine is just a drink, like juice, water or soda. People who drink wine with every meal really don't care what the wine is so long as it doesn't taste bad.
You can probably find more than enough wines anybody will like for under $10 a bottle.
It's just a drink.