Therapeutic doses of opiates do not cause respiratory depression, overdoses do, similarly to how acetaminophen overdoses cause hepatotoxicity, except this is not true, because regular consumption of acetaminophen causes hepatotoxicity, too, whereas opiates, when taken as prescribed, do not cause respiratory depression, in case of opiates, ONLY overdoses do, and therein lies the huge difference.
And then we did not even mention NSAIDs which cause from ulcers to cardiovascular events, even if taken as prescribed.
As for addiction, I would not like to get into the topic of addiction because a lot of people have an obsolete view on it and people already have their mind made up with regarding to it. Similarly to how my parents' generation think mental illnesses do not exist or that you can just "think away" depression.