My mom told me that different people react to it different ways. Some people find it therapeutic, others find it makes for a good high, and others say it makes them feel ick.
I for one don't want to risk going to jail first off, and I'm not about to find out what kinds of side effects I get. Lest I become addicted to it or something.
And even if it WAS legal, I wouldn't do it anyway. Personally I'll leave that stuff to my friends.