The main purpose of Common Sense was so Thomas Paine could express his arguement. He wanted America to be independent and free from the Britains. He argues about many things. he said that it would be better for the people to decide the laws themselves, and that the only purpose of the government was to protect life, liberty, and property. He says that the British government is too complex and has many contradictions, and that the monarchy has too much power. He explained that America would be well off without Britain.