It's not as bad at all when you're reading once the books are all out anyway. They're not bad, just not as good as some of the others.

The real pain was people reading them when it came out, so they'd wait 2 years or whatever for the next book and then it'd come out and the plotline they happened to resonate with didn't get very far. Or it progressed some but didn't particularly end on a high-note.