Facebook is hugely committed to transparency and authentic identity. So if you value separating your personal life and work life, don't want to share your personal feelings with coworkers or hear about theirs (or offer emotional support), or don't like to share with other people in the broader company what you're working on, it may be a bad fit for you. Likewise, if you prefer to be directed by leadership rather than establishing your own direction autonomously, Facebook might be a bad fit for you. Finally, Facebook's primary Menlo Park campus is located in the middle of nowhere with very little else around - you eat and get all your services on campus, with the nearest downtown a 15 min drive away. If you prefer to be in an urban center, you should either consider a different location, or a different company.