It affects the balance of oxygen and nutrients in the ocean, which in turn affects the entire biome of the ocean, which then affects every aspect of our lives. Please be aware that we can't eliminate ocean pollution altogether, but we can do a heckuvalot better than we are now. And no, banning straws to support a heroin habit is NOT the answer. Neither is more government. As China, the biggest polluter of the Pacific, proves conclusively, big government is the PROBLEM, not the solution.