The main flaw in your "argument" (it's not really an argument i just cant think of an appropriate word to described it) is that everyone has the same set of values and beliefs that you do.

Hindus, Buddhists, Christians all have every different meanings for what "god" is. Spirituality is pretty much unique to everyone. Think of it like traveling, say you fly from the east coast to the west coast and I drive, we're going to have different travel experiences but our final destination is still the same. Simply because someone does not experience it the same way you do doesn't mean that they are experiencing a diluted form of what you perceive to be enlightenment. Perception is a very relative thing.

Personally I am an atheist / agnostic. I don't believe in a god or an afterlife, but I have no way to disprove either and I have no way to prove how we got here on this planet. When I get high, which is a rare thing these days, I feel completely at peace, my brain stops racing around my head at 2 billion miles per-hour and grinds to a halt. I gain the ability to step back and examine my life and the simple things in it that I over look on a daily basis. I see incredible beauty in sunsets even though I know that it's only caused by our atmosphere bending and filtering out most of the different spectrums of light to only allow the red in. To me thats true enlightenment, being able to step out of yourself and see yourself for what you truly are and appreciate the simple things that nature put there for us to observe and enjoy.

One of the most spiritual experiences I've ever had was watching the Aurora Borealis dance through the night sky while I lit out of my brain. I know that it's simply caused by the way particles enter our atmosphere at certain areas with the influence of the earths magnetic field, but still it was the most beautiful and spiritual thing I've ever experienced.

(after reading over this again it may sound like I'm attempting to attack you, I have no intention of attacking you or defaming your ideas. Simply just wish to express my own as I feel that the free exchange of ideas is one of the best ways to encourage personal growth in ones self and others).