I hate interviews, but I have recently realized that interviewing is a part of a successful career. When you work for the same employer for a long time you can easily lose connection with your field outside of that employer’s work. When you interview you have to ramp up again on things you may have missed. You gain the skill of representing your work objectively. You learn to give a good summary of each of your projects and represent their successes and failures. You learn to tell your story more efficiently. Think of it as a continuous learning effort.