I have heard from many that similar strains smoked grown in different countrys are totally different. Like African sativas on that continent are totally different from African sativas grown in a very isolated growing situation here in the states.
I remember smoking weed in the early 90's that was so totally different from todays weed, old home grown, old Mexican "red hair" brick weed, when we finally got "kind bud", and then having smoked whats now considered "medical marijuana" with HUUGE ridiculous tricomes, and high amounts of every kind of cannabinoid not just THC. I mean come on, its like franken herb . In the last 20 years the difference is incredible to me. It might be different if I were over in Europe where maybe some of those "stronger" strains were more available then. But I do believe in how they are grown, how the amount of nutrients and climate control is maximized and mimicking light cycles is pushing the plants to be much different then something grown in the wild or in native soils.
I know that some of the more heritage strains are way more entheogenic then purely mentally sedating or whatever its considered when you get high, no amount of "couch lock" or stupor. There are so many property's to different kinds of strains and I do understand that there are growers saving genetics. I really do think there is just a true lack of knowledge and respect based around its use, and its really no use to a population who fails to change underlying issues.
Anyway srvn, I am not against mj by any means, I have friends who have seed companies and go to all of the cannabis cups here in the states. I truly respect it as having medicinal properties, but I think like any thing that becomes an industry its misused. People use it as a lifetime sedative for issues that can be healed through other means. I don't smoke any more after many years of dealing with the fact that most every strain unnecessarily lowers my blood sugar and causes hypoglycemia and lack of motivation and I have found much better herbs and entheogens to help heal issues, non of which I use regularly or plan to use if I don't need them.