As a journalist for several decades, I was taught well by my editors how to wrap up an article, interview, or column. Leave the reader with resolution but come to a definite conclusion.
When I began writing books, I learned a different approach, which is especially common in memoir and fiction these days: create an ending that hovers.
In other words, the basic plot is wrapped up satisfactorily, but the inner story, or character's trajectory, is left with unanswered questions. You may feel this is bad for your reader, but here's an article that might change your mind. It's our writing exercise this week: to read, consider, and examine your own endings to see if they reflect this idea.