The big negatives in Portugal is the fact stuff isn't actually legalized. Walking around Lisbon at night you're constantly accosted by thuggish groups of dealers offering cocaine, hash, marijuana, and other drugs.
If you watch them from a bar or something you'll see people interact with them and suddenly there are four of them around and they demand more and more money after the person had already paid the agreed upon price.
I even saw someone get jumped by a group of these guys after he protested that they had agreed to 20 euros for some weed and then wanted however much more.
They should make that studf legal so drug users can go buy quality drugs from the pharmacist or whatever and cleanup the streets of all the semi-violent and aggressive drug gangs that roam their cities.