Flowers need pollinators and pollinators need flowers. Evolutionists might need to invoke co-evolution, mutualism or symbiosis, but flowers are nevertheless beautiful, and many insects do a good job in helping them spread.
A recent paper in Nature concludes that the more variety in flowers (and insects) there is in a meadow, the more beneficial it is for us.
Science Daily summarises the findings of the research:
“The more it swarms, crawls, flies the better it is, say scientists. A diverse ecosystem populated by many species from all levels provides higher ecosystem services. Even rather unpopular insects and invisible soil-dwelling organisms are important.”