Someone lent me the first HP book to read, and was getting anxious because I hadn't started it. So I did, and read the first 30 pages or so. I stormed into her office asking her why she had given me a book about child abuse, and why did she think that was entertaining. She told me to force myself to read more, and I did and enjoyed the series.
I couldn't get into Twilight either. Couldn't get into the Sookie Stackhouse books, either, although I love True Blood.