This is why I: recycle and properly dispose of every last shred of waste I create; I pick up other people's trash if I see it in parks or trails; and when travelling in poor, ocean-dumping countries such as those in Asia, I try to avoid creating unnecessary plastic waste such as plastic drinking straws.
More food for thought:
"My body will not be a tomb for other creatures."—Leonardo da Vinci: artist, sculptor, anatomist, engineer, military strategist, gay man, and lifelong vegetarian
"Nothing will benefit human health and increase the chances for survival of life on earth as much as the evolution to a vegetarian diet."—Albert Einstein, vegetarian toward the end of his life
"So long as there are slaughterhouses there will be battlefields."—Tolstoy