Some options that I thought of:<p>1. Fear of being left behind (if everyone else got one you need one too)<p>2. Need more challenging work (you are not challenged enough in your current rank)<p>3. Capability of influencing the company a lot more in higher roles (a promotion means you get to make a lot more critical decisions which have a bigger impact)<p>4. Validation of hard work (if you have worked hard you deserve recognition in terms of promotion)<p>5. Compensation for an average life (if you are not happy with your life then you try harder to succeed at work)<p>6. Success at work can only be measured by rank (more promotions = more successful)<p>Thoughts?