2g of dried mushrooms is a pretty low dose assuming they were cubensis. Try taking a little more next time. Most people report a significant difference between a 2g and a 3g dose. But I agree, comparing shrooms to acid is like comparing apples to oranges. For me, the difference is that LSD is much more visual whereas mushrooms are more introspective. I love the visuals of LSD, but overall I prefer mushrooms for several reasons. For one, the availability. Cubensis are very easy to grow on a small scale (PF Tek) and if done properly and with a little experience can easily yield an ounce or two. I feel the after effects of mushrooms are much milder as well. When I eat boomers, I generally eat 3.5-4g around dusk and I can still function the next day. With even a small dose of LSD I expect to be up all night and be fried the next day. At this point in my life, I prefer the introspection over the insane visuals I looked for when I was a teenager. If I had to chose between LSD or mushrooms, I'd decided based upon what I wanted out of the experience. Mushrooms aren't something I'd take in a high dose then go out to a high energy social event like a bar or a concert. Some people do, but I prefer a small group of close friends sitting around a campfire. There is something about mushrooms that gives me a strong "privative" feeling. A connection to the earth, nature, the past, the future, and to the people around me. I can't really explain it. I'm not a very spiritual person, so I think that is why I enjoy them so much. Not at all saying that this is your intent, but mushrooms aren't something I would take just to "go out and get wasted."
Honestly, if you know someone that can hook you up with LSD and it's something you really want to do, try to reconcile. Even if they are a prick and charge you $20 a hit, then you gotta do what you gotta do. If you had such a good time, then $40 for 2 hits might be worth it to you. That's still less than say going out to club in the cool part of town and getting drunk.