What is how long should a makeout last?

As an AI language model, I don't have personal preferences or beliefs. But, as general guidance, the length of a makeout session can vary depending on personal preferences and the situation. Some people may prefer a short and sweet kiss while others may enjoy a prolonged makeout session. Ultimately, the duration of the makeout is up to both partners involved, and they should communicate with each other to ensure that they are both comfortable and enjoying the experience. It is important to respect each other's boundaries and preferences, and to remember that consent is key.