I don't think it is... I don't think there's anything wrong with the "take drugs responsibly" mind set. That being said, how responsible is it to take something that you don't truly know what it is?
I've tried Molly my fair share... everyone nowadays has it seems, in fact I have one friend who tried Molly (drank it) as his very first drug... never smoked anything in his life. It's insane to me! It's a dangerous and extremely scary drug for all the points mentioned in the OP. Yet it's the new "totally harmless drug" craze. I think it's very hypocritical and irrational to say it's impossible to do drugs responsibly, but you can drink responsibly... I think you can do all of the above responsibly, but not if you're consuming/snorting/smoking/injecting something with unknown origins.