I do drink the smoked stuff once in a while, but I'd never make it a daily habit.
Wow, if I've found a legal, safe, and even arguably HEALTHFUL way to simulate recreational drugs, then I might be onto something here.
Yerba mate is great stuff! I used to drink a lot of it when camping in the Atacama desert, sipping it trough the bombilla and meditating under the starry sky! And yes, it gives a special buzz, if taken strong as it should of course...
I find I can drink as much of it as I want and never suffer from too much caffeine like coffe can easily do. Even if I have consumed as much caffeine as I might have from coffee, it definately hits me differently, so I have a MUCH higher tollerance.