My 7.5yo DS is just starting to prefer reading to himself at bedtime. After hardly reading at all this summer (to himself, we always read to him) he got hooked by the last Harry Potter and wouldn't put it down. He's moved on to the Percy Jackson series and is really enjoying reading by himself. It's been gradual, at first I would read a bit to him, then he would read a bit to me, but then he started to prefer NOT reading aloud. We still ask every night if he wants us to read, but he often doesn't. So his dad or I bring OUR books and read in his bed side-by-side. This way, we are available if he has a question and still get to snuggle up for a bit before bed.