If your interviewer has been at the company for several years, understanding why could give you some really interesting insight into the company, how it treats its employees, and a taste of what motivates the people who work there. Plus, it shows you've done your research on the interviewer, which is always an impressive sign.

Depending on the interviewer's answer, you might learn something about the company's career training, leadership opportunities, workplace flexibility, internal job opportunities, and more. You might dig a little deeper by following up with related questions, like, "What do you enjoy most about working here?"