HBO canceled "Rome" after its second season primarily due to high production costs and declining viewership. The series was expensive to produce, with elaborate sets and costumes, and while it received critical acclaim, it struggled to attract a large audience. Despite its historical significance and popularity in DVD sales, the network decided to allocate resources to new projects that could potentially yield higher ratings and profitability. The show's intricate storytelling and character development left a lasting impact, but financial considerations ultimately led to its cancellation.

Yes, HBO's "Rome" is definitely worth watching. The series, which aired from 2005 to 2007, offers a rich portrayal of ancient Rome's political intrigue, social dynamics, and cultural life. It features strong performances, particularly by Kevin McKidd and Ray Stevenson, and boasts high production values with impressive sets and costumes. While it was canceled after two seasons, many viewers appreciate its storytelling and character development. Fans of historical dramas will likely find it engaging and visually captivating.

The movie "Rome" is rated R primarily due to its explicit content, which includes graphic violence, sexual situations, and strong language. The series portrays the tumultuous and often brutal realities of ancient Rome, showcasing scenes of warfare, political intrigue, and personal relationships that contain mature themes. This level of content is deemed suitable only for adult audiences, hence the R rating.