I'm just going to say, it's useless. Back in the day it may have been sought out due to medicinal importance...but it's not really... important. I've never done, and don't plan to. I'm open to everything, but I'm not saying I like it. It's just kind of something older people (and now younger people....yay...) spend their money on.
It's like politics, annoying and full of fighting, but people are still addicted to it.
I dunno.
Edit :
It's also said to be something to relax...that's a load of bull in my opinion. Do something relaxing, but at the same time...good for your body/mind. You may just be burning a natural plant...pftt...but you could be...drinking one instead. (Tea maybe?) It's often found to be good for you, and relaxing because of it's ginseng... Blah blah blah..