It has proven to be significantly more stable and simple to use than Windows and the default applications really nicely hit the simplicity and usability for a user that primarily needs web, email, photos and minor document editing. I'd even argue it's better than macOS for that user profile (especially since it's not localized to my local language, which eOS and most of major Linux apps are).
The fact that it actually looks good by default is nice as well.
Known downsides:
- It's based on Ubuntu LTS (which is great!), but the new versions tend to lag after Ubuntu LTS releases by months at a time.
- No upgrade path between versions.
- Releases tend to be buggy on some hardware after release.