Перевод вопроса: преимущества и недостатки человека говорящего на двух языках
Advatages: it helps to develop skills for function ranging from inhibition, memory working and switching attention.
Also you will may need it in the future, for example, in your job, you will be respected by everybody
Disadvatages: You can't express yourself only one language,
People ask you a lot of stupid questions, For example, In which language do you think/dream
and
etc