I think the idea that the war is over when there are still ridiculous regulations keeping a lot of people down for no reason other than to maintain control and power is why a lot of people view these legalization efforts as a blessing in disguise.
I think, rightfully, those who are more fiercely opposed to some of these legalization efforts realize that there will be a hell of a lot more complacency on an issue that really demands so much more. The ability to get high is probably closer to the bottom of the list in terms of important things this plant is capable of offering us.
There will be many people who hold your opinion. I think it's a dangerous position to take given the potential this plant offers us - medicine, production of goods and services as well as energy.
It is so useful that it actually poses a threat to the very power structure that exists (and is largely responsible for prohibition and many other immoral acts against humanity) - which is highly monopolized. Much of this power stems from scarcity of resources (see: Oil), monopolized industry (always with government help) and the financial system. A big part of this equation could be removed were cannabis completely legal for all to use as they saw fit and to grow as they saw it.
The plant is capable of providing the energy we need, the materials we need and the medicine (and even food although I find it tastes awful) that keeps us going. All from your own backyard.
Which is why we also legalized industrial hemp.
Perhaps you didn't know that.