93
Well, I certainly would'nt say that cannabis is the same experience again and again, its just that many people have repetitive behavior problems. Also, most cannabis available today is heavily indica dominant as indica yeilds much faster than sativa and caters much better to indoor growing. Smoking a pure sativa is like doing a completely different drug(mercurial as opposed to venusian-sorry, i can't really break it down to laymans terms). Not to mention that smoking is just one method of consumption- there's vaporizing and oral use(cannabis is fat and oil soluble) which bring about a whole new level of experience.
Also, it's not really fair to say that you do'nt know what you're getting with pot. Potency is quite easily ascertained visual with cannabis. The theory of laced pot is quite inaccurate due to the fact that a dealer would lose money lacing pot with something more expensive, as well as the fact that many compounds are destroyed from the heat. The only semi-common thing it's laced with is pcp(wet, sherm) and that can easily be differentiated from normal cannabis by a plasticy/chemical smell and harsher hit(along with a plasticy taste

).
However, I do completely agree that any drug can be mis-used and cannabis is no exception.
93 93/93