If you have access to university databases, there are lots of interesting scholarly articles on it. I recommend searching such databases for this information. If you don't have access to them, here are a few:

The below article cites an article in the scientific journal Experimental and Clinical Psychopharmacology - the original article from the journal goes deep into detail http://www.webmd.com/mental-health/addiction/news/20001127/heavy-pot-use-can-cause-physical-dependence

The newest (2013) revision of the DSM (DSM-5) also has cananbs withdrawal and other cannabis disorders for the first time http://emedicine.medscape.com/article/286661-clinical

About 2/3 down the article here you will see them citing many other sources. https://www.psychologytoday.com/blog/reading-between-the-headlines/201205/is-marijuana-addictive

There are plenty of sources out there for this information if you choose to look at it with an open mind. I find it odd you changed your view from marijuana just presenting as psychological addiction to now seemingly implying that because the physical withdrawal symptoms (which you prior denied existed) are less than other drugs that it is somehow ok. You seem to be dodging the point we are trying to make, that marijuana IS physically dependant. It seems now you are trying to make it a point about "how dangerous" it is? Again I make no claims on whether it should be illegal or "demonized" (you really seem to enjoy using that word despite the fact that nobody is demonizing marijuana) and in fact I stated clearly in my other post I believe it should be legalized and certainly should not be demonized as you say. But I also beleive we should educate users properly, the notion it is completely healthy and non-addicting and a drug that forms no physical dependance is now known to be an incorrect one. Lets acknowledge that and move on...