Only a particular set of people are willing to give up access to the Play Store and Google’s suite of apps. There are many reasons why you might want to make the effort, and here are some of the big ones.
When I first started using Google, it was to perform searches.
It became a place for writing documents and storing files.
Google became a way to browse the web and sync every page I visited.
How functional your phone will be out of the box will depend on the manufacturer.
Saying goodbye to Google means losing out on the many Android apps that Google makes.
If you choose to go a step further, like I did, and use only open source software, say goodbye to social networks, music streaming services, popular games, most navigation tools, cloud storage providers, video streaming sites, and most productivity tools.
Then it turned into a way to download and manage apps, track Android devices, and wipe them remotely. Google Play services run in the background on every Android device that ships with the Play Store, and this helps Google perform any number of tasks from installing apps remotely to pulling up your location.
Search on Android became Google Now, a digital assistant that uses everything Google knows about us to predict what we may be interested in or want to know. These services also give third-party apps access to some of that functionality.