Is it proper to date a girl who smokes pot?

What should I do about it? Confront her? Immediately break up with her?

So she:

is

1. "smart, attractive, funny, pro-reason and pro-man in general."
2. likes to some the devil bush because she feels there are aspects of it which benefit her life, such as using it for a social and stress relief tool.

First of all, Objectivism is not puritanism. While Ayn Rand was never much for any kind of drugs (the exception being cigarettes no less) although I do believe Peikoff has recounted that she has stated that they should "get some" of said devil bush in one instance (I do not know if this was carried through), Ayn Rand's views on drugs were expressed as an opinion, not a moral statement. While, generally speaking, there is a negative view of drugs with respect to your life in the Objectivist mindset, that is because the vast majority of drugs do entail harmful effects or have social costs that outweigh their actual benefit.

With the exception of the laws against marijuana (which are a joke to get a round), this is, for the most part, not true of marijuana, and in fact, many other drugs, such as mushrooms, LSD, and I think perhaps even Peyote, neuroscientists have been finding some positive effects they may have on various diseases such as ADHD/ADD, Autism, an I think I remember Alzheimers. Marijuana can also for instance, be very useful for those with cancer as my research shows. In fact, when marijuana is used with a vaporizer, or even better, cooked into edible forms, its negative health effects are relatively negligible, especially compared to many other legal and/or commonly used drugs.

Now many people do not have these legitimate medical conditions, but stress is a very real condition and can become very harmful to ones life at certain levels. While most people do not have that issue, stress is a legitimate issue nonetheless, and just like many other discomforts, we seek to deal with them through technology, science, and the resourcefulness of knowledge about remedying effects. You should be judging her on her overall qualities, not simply her marijuana smoking.

I think you need to reevaluate your heirarchy of values here. If the usage of marijuana is not to a point where it is actually destructive to her life, if it is not seriously being a detriment to her productivity, success, etc. then I don't think its something to put much weight on. Hell, try it just the once if you haven't before. If nothing else, you will get a better idea of what it is and it will give you some bonding points with her.her? Immediately break up with her?

I answered this question in a recent edition of my Rationally Selfish Webcast.  An audio recording of my response is available as a podcast here: NoodleCast #53: Live Rationally Selfish Webcast. The discussion of this question runs from 51:32 to 59:46. 

My basic view is that regular marijuana use is a red flag for a person with problems in life, but try having a conversation -- or two or three -- to understand her views and your own. Also, a 30-day pot-free challenge might be very telling for everyone.