Some disadvantages of being an only child are that they cannot share their feelings on a daily basis which can sometimes lead to occasional bouts of depression. Some other disadvantages of being an only child are that they may face difficulty adjusting to the extra parental pressure placed on them to excel in academics and extracurricular activities. They may be under extra parental pressure to perform well in academics and extracurricular activities. In addition, they may also have to find ways to play, entertain, and self-motivate themselves without a sibling.