macOS offers a lot of stability, it's reliable, predictable, boring even. It works out of the box and stays that way, it survives upgrades, and rarely crashes.

The release cycle is steady, and changes are generally gradual and incremental. Mac users don't usually have to worry about a new release breaking their system or their workflow because a developer wants to reinvent the wheel or a UI designer wants to make their mark. The only big shifts have been processor transitions.

The Mac ecosystem also allows users to have a foot in both the proprietary and open source ecosystems on a single platform. Being able to run, say, web development environments and Adobe CS for example, can be a lot easier than farting around with Wine or WSL.

Granted, there's plenty of downsides to the Mac as well, but the platform definitely has merits.