i know wpf can be richer-looking, but what is the point of using them if they complicate things so much?

for example if i want to do something on form load in wpf i have to through the trouble of writing this:

public MyWindow()
{
  Loaded += MyWindow_Loaded;
}

private void MyWindow_Loaded(object sender, RoutedEventArgs e)
{
  // do work here
}

whereas in winforms all i do is double click on the form

the question is what are the benefits of using wpf over winforms?