I don't think it should be a mystery to management why employees hate working at their company. Maybe you can help them figure it out by explaining that workin

I don't think it should be a mystery to management why employees hate working at their company. Maybe you can help them figure it out by explaining that working at company X is miserable and enumerating the reasons why, in specific and actionable detail. Then the HR person who conducted the interview can duly note your thoughts down and file them away, never to be seen again, as the gravy train keeps rolling, but you will have honestly done your best. Congrats on your escape, and best of luck at your new job. Employment is a business relationship; don't feel like you owe company X anything.