Right use on ion-content

Hi.

First time creating a ionic app here. And is wondering if using ion-content like this is bad?

<ion-app>
  <ion-header></ion-header>
  <ion-content>
    <ion-router-outlet></ion-router-outlet>
  </ion-content>
</ion-app>

Rather then having ion-content on each page?
Or does anyone have a golden standard for this?