Do you agree or disagree with the statement that interrupting others while others are talking about something in a discussion is impolite and unacceptable?

Do you agree or disagree with the following statement? Friends sometimes should have different opinions at the same time maintain good relationship.

Some people prefer to do shopping in large grocery stores or department stores. Others prefer to do shopping in small specialty stores. Which do you prefer and why? Use specific reason and example to support your response.