Why may we not be in the universe, as our dogs and cats are in our drawingrooms and libraries?

Reality is a construct of the neurons.

Naturalism is the least subjective reality in this human world.

Say, there is a book written by Tolstoy sitting right there on the table. To our unique human consciousness, the reality of the papers in the book, is infinitely different from the valuable literature that they possess. For the kind of consciousness possessed by the bug which eats those papers, literature is non-existent, yet for the Human Consciousness, literature has a greater value of truth than the papers themselves.

Most of us go through each day looking for what we saw yesterday And, not surprisingly, that is what we find.

The perception of reality is something that is constructed by the human mind based on its own needs and knacks.