We human beings make our choices on the basis of what we know. In hindsight probably there will be regret if a decision could or should have been made differently. But what we know now very often is now what we knew when the decision or choice was to be made.
Every day we learn and become more aware that our oceans are harmed by pollution. Lets hope that in the upcoming years, the right choices will be made to preserve our environment, and especially our oceans.