Too Much Time and Space

Life used to be so simple when Earth was the hub in a Universe of twinkling stars that revolved around us. The moon rose, the stars circled, the seasons came and went. People were born, lived three-score years and ten, Then died and were buried, remembered with legacies. But now we're told Earth is a speck of dust One of nine planets in our solar system circling a mediocre star, our Sun, which is one tiny sand grain on an endless beach of stars in the Milky Way, which is one of billions of galaxies in the vast, endless space of the Universe stretching unimaginably way out there, beyond eternity and comprehension. Humans have strode the earth for 200,000 years of so, Life has been here for 3.9 billion years, The Big Bang, that conceived the Universe, occurred 13.8 billion years ago. So human existence is a tiny pico-second in the lifetime of the universe. So how does it help to know humans are a mere skerrick in time and space, In a universe so old and vast it belies comprehension, how does knowing this help in any way?