Dopamine and Serotonin - What's Out There?

I'm always wanting more and or maybe both, not really being contempt or happy with what you're already having. MDMA is unique because it creates huge increases in dopamine and serotonin at the same time. Other psychedelics of the sort like psilocybin LSD have a very sleep-like state. They tend to be more serotoninergic in nature. And they are very similar to sleep in the sense that space and time become very fluid.