Much as we tend to romanticize the ancient Romans, they were a bloodthirsty and ruthless bunch.
But the Romans were a vast improvement on the native customs of ancient Britons, who used to practice human sacrifice. Contrary to modern liberal interpretations of pre-roman Britain. Iron Age Brits had an unspeakably wicked culture...
If the Emperor Claudius hadn't gotten the notion to conquer Britain, they could have been living a happy life...and not paying any taxes to Caesar.