For instance, if I have a dog trained to fetch my fowl from a lake after shooting it, is that convenience or survival? Does it not depend on the circumstance? In the deep cold of winter it may spare me from a swift death, for the very same hunter in the summer it may save me from spending 30 minutes fetching it so that I can spend that 30 minutes making camp or playing cards.
This trade off runs the entire gamut, all the way from extreme survival to extreme convenience, and who are you to say what is right or wrong? Further, is there not a point where cirgarette butt collection increases survival for living things? Do you wait for that inflection point before you begin calling this ethical?