Your dreams and imagination evolved as a view into another universe. As with the current beliefs, you cannot decipher technical information -- no words in books, no details of how devices work, so even if you can describe things you see from another place, you could not reproduce a working version.
Now how do you convince others that the things your are seeing are really happening without being labeled insane? And how could you use this information to benefit yourself or others? Take a peek into the multiverse to see how other versions of yourself have solved these problems...
Your experience is anecdotal. There are countless documented cases of people being not only in control while lucid dreaming, but also remembering what they did. It's just that there is a limit to what you can do in dreams, because they have a purpose and trying to force too much through lucid dreaming ends up damaging your sleep, which your brain will do everything in its power to not let happen.