At the fact that you do not feel comfortable in the present “duality” you notice best that this is not your natural state.
This is one of the reasons that spiritual apprenticeships say that this “reality” is not real, but an illusion. However, I must contradict that: The world in which the human lives is the world of the human. This “false world” is our training field to perceive the being, because everything what surrounds us we perceive in relation to what we are. You are happiest if you feel merged with “All This Is”. You will not too often be able to reach this state, however, it conveys moments of absolute peace for you. This is also the reason, why we nothing await eagerly than to return to the source.