I did 2g of dried shrooms about a week ago, having almost no prior experience.
It was fun - I was seeing funny things, my friends looked funny, I laughed a lot, was a lot more talkative and social.
My only issue was a tension headache which started about when the first effects came on and was even worse the day after, lashing until about 24 hours after the mushrooms were taken. My friends did not get the headache.
Otherwise, while I found the experience fun, and I'd do it again if it wasn't for the headache, I really can't fathom how people describe it as one of the most profound experiences of their lives.