No matter how close someone is to their parents, there's going to come a time where some friction will develop between them.
And while this can potentially happen at any point in their relationship, issues between parent and child most commonly boil over during the teenage years.
Part of this has to do with the tendency to crave more independence when we reach that age, but it's also a time when we start to question the status quo. While this often applies on a societal level, a teen may also start noticing differences between the way things work at home and how they feel those things should work.
And while the student we're about to hear from was perhaps unintentionally telling about what they were willing to accept, they made a pretty major decision based on what they could no longer tolerate.