Based on the chart, it looks like I would benefit by giving up alcohol and switching to heroin. However, I am a little dubious and not quite ready to make the switch. I shopped around, and none of the stores even had heroin.
And needles are not even required
Wikipedia is surprisingly thorough on most drug articles. But you may even have seen such pipes for sale in stores... it can be smoked. Smoking various substances is pretty well accepted by society, even.