In Shakespeare's A Midsummer Night's Dream the fairies greatly affect the human world. They can change the weather, cause humans to fall in and out of love and can abduct children. This, as can be imagined, would be very disconcerting to the parents of these missing children.
One of the ways the fairies affect the natural world is by their arguing. When the Fairy Queen and the Fairy King argue, storms break loose, seasons become intertwined, fog envelopes everything, rivers overflow, diseases spread throughout the land, crops refuse to grow. As Titania says “ The spring, the summer, The childing autumn, angry winter, change Their wonted liveries, and the maxed world, By their increase, now knows not which is which.” (Act 2, Scene 1, Pg. 21 line 111-115)
The fairies also affect people falling in love. The fairies possess a magical flower . The person whose eyes the flowers juice touches , will fall madly in love with the next thing they happen to see. This flower has been struck by one of Cupid's arrows. “It fell upon a little western flower, Before milk-white, now purple with love's wound, “.(Act 2 , Scene 1, Pg. 23, Line 166-167)
The final way fairies affect the human world is by taking changelings. In A Midsummer Night's Dream the term “changeling” is used to describe stolen or exchanged children. Fairies take human children for entertainment and company. Titania's Indian boy was the main reason for all of Oberon's and Titania's arguing. In fact, Oberon got so jealous of the changeling, he put the juice of the magic flower into Titania's eyes so she would fall in love with a beast. This was so Oberon could have the changeling as his own page.
As demonstrated above, fairies can have much impact on both nature and humans. Therefore humans and fairies alike must get along and work together for the good of the world.