7. You Have Completely Different Life Goals
This is the sad reality of life. You can have someone that you love so tremendously, but if you have different life goals it may not work. This includes but is not limited to issues such as wanting children. If you do not want children, that is fantastic and more power to you. If your partner does however, that is going to cause unfixable damage. Children are not something you can give as a compromise, and it is too much of a lifestyle impact to just give up. Make sure you and your partner both know the answer to other long-term lifestyle questions.