There are a few issues with physical attraction being the sole deciding factor when it comes to whether or not someone is interested in a relationship. First, for many people, physical attraction is one of the most important factors when it comes to deciding if they want to date or get involved with someone. However, what may be attractive to one person might not be appealing to another person. Additionally, once someone decides they are interested in someone, it can be difficult to switch focus from their physical appearance to their personality. This can lead to disappointment if the other person does not seem like they have anything else going for them.