When it comes to my personal experience of reality...
Quoting myself to make sure you remember my exact wording.
it doesn't matter one iota whether anyone else can have the same experience of reality as me.
There are realities, plural. Not reality, singular.
This is not a story, I came to know this, not just with my head, but through my essence, at a very early age. Before I had ever read a single spiritual book, before I was even interested in reading period. What brought me to this path was not clever words, but a deep inquisitiveness I was born with. An inquisitiveness that led me to question every single thing. When I had torn every conception I was in possession of, every belief, every story, every idea to shreds with doubt. Then I saw through my identity, saw past the event horizon of self. I was not me, I was something more, something deeper, and more expansive.
One of the many realities human beings are capable of experiencing is the current predominant fixation. This fixation is mostly about physical survival. As you said, as a species we owe quite a bit to this "reality", and to our ability as a species to have a shared understanding of it. Science is brilliant and has done a ridiculously good job of improving our ability to survive. I look forward to science one day extending human life span indefinitely. Science is good, this discussion is not science vs. mysticism.
To choose one reality, at the exclusion of all others is like choosing to live only in your closet. Or choosing to look only at a single blade of grass and deny the existence of the amazing ecosystem of your entire lawn. Like denying the existence of Chinese people, because all the people you know have never met one, and you have never seen one yourself.
Just because the vast majority of people are only aware of "the world of form" doesn't mean a formless world doesn't exist. Or any number of other ways of experiencing reality.
Let me clarify my original point, which I quoted above.
I am very interested in the realities other people experience. Whether those realities are our common, normal, survival based subjective material world, or some other possible world.
What I personally have no interest in, is arranging my personal experience of reality to match every other person's humdrum experience to the exclusion of the inner freedom to explore other experiences.
Think of the different realities we can assemble as different ways of thinking about life. Would you go to a medical doctor to learn meteorology?
I experience the knowledge that comes from the world of form, but to limit myself to that knowledge alone...it's like asking a child to never learn to read, or walk.
Have you seen the many studies on the effects of meditation?
Different effects of meditation:
http://restlesssoma.com.au/soma/index.php?topic=12117.msg86108#msg86108