Humans are selfish in nature and they are always self-centered. Everything that is essential for them is destroyed by them for their own benefits. The same idea is described by the poet here. He says that honeysuckle is a beautiful flower but since it is sweet in nature and it is edible so humans would not look at its beauty rather they would try to eat it too and destroy this beauty of nature.
The main theme of the story 'The Fisherman and His Wife' is that people must not be greedy and should happy of what they have. Otherwise, everything can be lost due to their excessive greed.