That incessant chatter going on in your head might not be the mental pollution it seems. It might actually be how you constantly weave your dreamstate, your self included, into existence. Obviously, or maybe not so obviously, your reality has no independent reality; it’s all in your head, including your head. That might be a nice thing about meditation; that you can close your eyes, turn off your brain, and spend some quality time away from the hustle and bustle of projecting your dreamstate into existence — stop conjuring and weaving and just be. World-building is hard work, which might be why we need to downshift our dreamstate creation to a slow idle for a few hours each night. Also, though meditation doesn’t translate to spiritual progress, I can see where it might provide some pleasant and much-needed relief. Then, when it’s time to come back, you stop making a placeholder sound in your head and open your eyes and the whole thing comes flooding back in, or pouring back out, depending on how you look at it.