Humanity is nature.
There is nothing unnatural about humans and their actions, even their destructive ones. We are but one of the millions of evolutionarily fine-tuned works of random biotic art, and I will argue that what distinguishes us from other species is not that we are unnatural in our destructive tendencies, but that as a species we are falling prey to unguided freedom. Whatever you call it, humans have evolved into a destructive species, thereby ensuring our survival. Maybe that is what was intended. As an attractor or reward, nectar is an expensive sugary soup produced by the plant to ensure a happy marriage and the mixing of hopefully beneficial genes in the progeny.