All too often, we tend to think of flowering plants as something beautiful put on this earth to stimulate human sensibilities.
Nothing, of course, could be less true.
Plants produce flowers to attract pollinators or otherwise distribute pollen in order to achieve fertilization — preferably cross-fertilization — and produce fruit (or seed) so as to assure the viability and continuation of a given species. Beauty, as we perceive it, is a mere side-product of this essential process. Beauty is as beauty does.