Salesforce is often categorised as an “out of the box product”, and by that we mean that from Day 1 of your deployment, there are standard features/functionalities already up and running that allows you to start using it straight away. The issue with this, however, is that sometimes we just assume this is how Salesforce should look like/be used like; and typically, we start adjusting our preferences to be better aligned with the “out the box” functionality.
A prime example of this is the general user interface (UI). People assume that the fields/page layouts/related lists etc. should stay the same. It isn’t until someone shows an alternative view, do we appreciate how much far we can go with our customisation.