A necessity for any computer with data or information other than your own (and really, for all computers these days). It is a reasonable protection step which, if ignored, can be used against you if there is a breach. At least with the editions of Windows I use, it is "baked" in and seamless.
The other encryption to be aware of is to encrypt your backups before they go to other media or the cloud. Do not rely on the backup service to encrypt for you. In other words, you handle the encryption first, using your own key, then upload or copy to storage.