I am pro using heroin medically (and all/any drugs where trials have shown them to be effective). For heroin, it's a powerful drug that can be used in palliative care situations where nothing else will do. When it's administered in a controlled setting by a medical professional. The risk and danger of addiction is very low in these circumstances.

Overly cautious drug policy (such as an outright ban on heroin (or any drug)) can deny powerful remedies to those who can benefit from them.