The primary reason the British government taxed the colonists was to help pay off the war debt incurred during the French and Indian War. The war had significantly increased Britain's financial burdens, and the government believed that the colonists, who had benefited from British military protection during the conflict, should contribute to the costs associated with their defense and the administration of the colonies.
While it is true that some in Britain viewed the colonists as a source of revenue and that there was sometimes a perception of taking advantage of them, the principal justification for the taxes was the belief that the colonists should share in the financial responsibilities resulting from the war. This led to a series of taxes, such as the Stamp Act and Townshend Acts, which ultimately contributed to growing discontent and unrest among the colonists, culminating in the American Revolution.