[King homer daStupid]

If you're going to make a level just to show off (i.e. not uploaded onto a server), then I don't see anything wrong with it not being very practical and simply being eye-candy.
If you're making a level for a server or something, then sure...it's important to consider the function aswell as fashion.

I agree with the "out of place" logic, I don't see many tables and chairs in the mountains in real life! A good leveler thinks of something to fill the level with, but something that suits the environment, not something random.