Should be a link to "Life of Brian" here - where Cleese says "What have the Romans every given us? Nothun'!" and a cell member raises his hand. "The Aquaduct?" "Oh yeah, the Aquaduct, yeah, that." And on and on until they have a long list of improvements instituted by the Romans.
Sure, but they have to be alive to appreciate anything. You can make the argument: providing public safety, armed police, clean safe water and medicine, Romans saved far more lives than they ever hurt.