Yep, I've read the Hobbit, LOTR, That and Beren and Luthien and have Fall of Gandolin in my to read pile. What was striking to me about Children of Hurin was how dark/grim it was compared to LOTR.Sure the Hobbit is a children's book, and LotR is family friendly. But the Silmarillion isn't family friendly. Plus we've had this book released recently:
that is 100% not family friendly at all.
But when I think of Middle Earth, I still think of it as being more family friendly, PG-13 at the most.