Me personally, and I dare say most people my age, have grown up being told & taught that drugs are evil etc etc. Aside from the obvious initial dangers they present, long term health, both psychologically & physically, are severely affected. We, as a society, have been told this for years. The difference with alcohol is, we're told it's ok for us, in moderation. 2-3 units per day is perfectly acceptable for a man. Now find me a doctor willing to say 2-3 lines per day is ok. Or 2-3 rocks per day. Or 2-3 dabs per day. You won't.
In all honesty, I don't know about Portugal. But I know about England & out ability to overdo it. You can sink 14-15 pints on a night out & in theory, you should be ok. You'll be rough, but you will live. With our love of binge drinking, you don't think that'd cross over into drugs?
Of course, the government, aswell as the WHO, say fags are deadly. But they're still willing to take a fortune off you, for the privilege of killing yourself. But then they're not in direct competition with cigarette smugglers. It's hard enough trying to get a snidy carton of 200 these days, so you're forced to pay the premium price in the shops. And the government know this. But drugs is a different kettle of fish. I know full well, I could make one or two phone calls & have it delivered to my door, at any time of the day or night. And Legalisation won't stop that.
I'd feel, someone between disappointed & fuming. But of all those things, none are as deadly, (especially in the short term) as injecting smack