The reasoning doesn’t come any more crystal clear than in this article. From Jeff Thomas at internationalman.com:
Back in the late 18th century, the American colonies were made up largely of self-reliant people who had a strong work ethic. Most had either been born in the UK, or their parents or grandparents were born there. What set them apart from their fellow Britons was that they didn’t simply accept their lot in life back in the UK. They chose the more uncertain outcome of life in the colonies. They therefore had the courage, imagination, and desire to create their own destiny, traits that their fellow Britons did not possess.
Not surprising, then, that they carved out thirteen very productive and prosperous colonies, without the burden of a top-heavy, overreaching government. When the UK government sought to increase taxation and control (i.e., enslave) the colonists, there was rebellion. The tax being exacted by King George was miniscule by today’s standards, but that wasn’t the point. They fought against enslavement, and, in their talks of independence, they emphasized this point.
The American ideal, first and foremost, was freedom. They weren’t seeking entitlements, or promises of government-generated jobs, or protection from the natives. They had already learned how to protect themselves, create their own jobs, and provide for themselves. They were prepared to be self-reliant as one of the prices of freedom.
When Thomas Jefferson wrote the Declaration of Independence, it was with the intention of creating a document upon which all the other delegates to the Constitutional Convention could agree as a basic set of understandings. In doing so, he not only unified the colonies; he also defined freedom for every generation of people that came after him, whether they were American or from any other country in the world.
To continue reading: I believe in the American ideal, and that’s why I don’t live there.