I going to take a moment to play "Devil's Advocate" and offer two things that are worse, I think.
1. Since the dawn of homo sapiens, we have had the untdy habit of piling up our garbage in "middens" or dung-heaps.
In the 21st century, we still do this! Lip-service has been paid to schemes for more efficiently recycling our waste - we put that little triangle logo on our plastic and then throw the plastic into our local dung-heaps and into the ocean. Mankind is like an infant covered in his own poop.
2. Mankind enjoys his fish-and-chips just a bit too much. We are depleting the ocean's ability to regenerate.