What's so great about the Foo Fighters?

They have NO songs about lemon squeezing, custard pies, not even so much as a spoon inside the jar. No ring-wraiths, no gollum, no hobbits. You know, I don't even think any of them are Satanists. I mean really, can you picture Dave Grohl stonewalling old blues men behind a battery of powerful corporate attorneys? It's also obvious to me that he's never even THOUGHT about violating a groupie with a mud shark...