Because Hermione Granger was in love with a man who forgave and was forgiven, who loved and lived for others first, who sacrificed everything time and time again to grasp the handfuls of happiness he had found and refused to release. It was his turn to be chosen—it was his turn to live the life he wanted, how he wanted—and if Hermione had any say in the matter, she would be there by his side every moment for the rest of their forever.