Sometimes we’re able to give really clear advice: “Do this!” or “Don’t do that!”
This is not going to be one of those blog posts.
Drupal gives you the ability to re-use fields. If you have an “Image” field, you could choose to use that same field on every content type on your site. However, it’s not always clear whether re-using fields is a good idea. Sometimes it is, sometimes it isn’t.
Here’s an overview of the advantages and disadvantages to consider before re-using Drupal fields.