Mushrooms are by far my favorite mind altering substance. Back in my youthful years I consumed shrooms on more than 1 occasion. Each experience was different than the previous but no less epic.
I found the one of the biggest factors for me was the people I was with. Depending on their mood and energy level, that would greatly impact my experience. To this day I have never had a bad experience with them.
Everyone's body reacts differently, but this is one experience I think everyone should have. Just make sure you do them with people you are very comfortable around. Interesting article