Here is another poll bound to dissatisfy some folks because it is asking about a feeling or general sense based on experience rather than any actually quantifiable data. . . my favorite!
True or False: "In My General Experience Playing D&D, DMs Care More About Setting Lore Than Players"
I voted false. In my experience there are four sorts of players.
1. The player that loves the setting lore and reads up on it so he can recognize it when I use it. I have one of those at my table.
2. The player that really appreciates the lore, because it gets used in the game and adds to its depth. He can tell from description and use that the setting lore is in play. I have two of those at my table.
3. The player that doesn't care all that much about lore, but likes it better than nothing. He's just not very invested in seeing it happen. I have one of those at my table.
4. The player that couldn't care less about lore at all. I don't think I've ever played with one.
As you can see, three of my four players care about the lore at least as much as I do, and I love lore. This is my typical experience across all games that I've played in or run since I left high school and hack 'n slash behind.