I went to that museum schroomed out of my mind one time. Good times.
https://news.ycombinator.com/item?id=8218047
Personally I wished all those tourists that can't wait to get 'schroomed out of their minds' stayed at home but making drug use illegal for tourists and legal for the locals would be a legal and practical impossibility. They tried doing that in some places, all it led to was enterprising locals becoming either small time dealers or renting out their services to tourists.
Supply and demand. With drugs as long as it isn't legal everywhere I guess we'll continue to see this pattern.
Hope you enjoyed the museum, even in that state of mind, van Gogh was an amazing artist (and a substance abuser himself...).
Eindhoven and Utrecht are not touristy cities. However they do have large "non-local" populations (expats in the first case, students in the second) so perhaps your point still stands that it is not the locals regularly consuming.
Especially in the 18-35 bracket, above that it gets a bit less wild (naturally).
All the university cities have a relatively high proportion of substance abuse and quite a lot of that will be locals in the student age bracket.
But when comparing locals to tourists the tourists definitely make up a disproportionally large chunk of the drug users. And not all of them come for a few days, quite a few people move to NL permanently because of the lax drugs laws and end up in the social care system.
It's sad because really nobody wins there and there are no easy solutions. Re-criminalizing drugs will be followed by a significant increase in crime and the Dutch ability to influence the countries around them to adopt similar legislation is without any chance of succeeding.
What do you mean by substance abuse? And, how much do you really know about the drug habits of your thousands of acquaintances?
The few people that I know that are into harder drugs would not advertise that too openly but if there were no downsides to hard drug abuse that you can spot relatively easily if the consumption lasts for longer than a trial period then I don't think we'd have hard drug legislation to begin with.
In America for instance people would be a lots more circumspect about their drug use (but those barriers evaporate as soon as they set foot on Dutch soil and it is party time).
Tourists visiting cities simply because of the novelty factor of drugs being legal and then partaking in this out of curiosity are simply stupid, not addicts (they are stupid because they are not in any way positioned to know what they are buying and this results in quite a few trips to the ER each year).
But drug addiction does exist and the number of foreigners that end up in Dutch rehab programs and or shelters is huge.
It's even got a name here: drugs tourism.
Alcohol can be abused just like any other drug (and in fact, is probably the most commonly abused drug).
If someone is curious about psychedelic drugs, and they visit Amsterdam because they are decriminalized there, they are therefore stupid?
I can't really imagine that's what you mean, though that's what you wrote.
The fact that it is decriminalized does not mean that people won't be trying to take advantage of you.
Buying drugs is not quite buying a bottle of Sprite, it typically does not come in a container with a brand name on it and as a tourist you won't be hanging around long enough to work out which connections you can trust and which to stay away from. The person selling it to you just wants your money, once. For a repeat buyer the risks would go down considerably.
Feel free to ignore any and all of the above. We're off-topic far enough as far as I'm concerned, if you feel that buying drugs abroad in one-off cash transactions does not carry significant risk then I'm perfectly ok with that.
(By the way, many products sold in such stores do in fact come in branded containers including instruction booklets for safe usage, etc.)