“I ran across this question recently in a Facebook group, and noted there was a lot of opinion on it. Some authors are vehemently opposed to using chapter titles, while others adore them. So, what’s best?Well, the simplest answer is that it’s entirely up to the author. However, chapter titles do tend to be more prevalent in certain genres, so if that’s one you write in, you may want to adopt them.”
R. J. Crayton provides tasty food for thought about the use of chapter titles, noting that some genres tend to use them more than others. I tend not to use them because I don’t like to tip off readers about what’s coming up.
Fortunately, Crayton doesn’t suggest a return to old fashioned chapter titles of the sort that were (a) long, and (b) spoilers, such as: Chapter Three – Where Bob Learns That When His Ship Goes Down Near Cuba, There Are Real Sharks in the Water.
Indies Unlimited offers another good post for writers.