I agree a lot here - Apple's first party apps are a big part of what keeps me on macOS & in Apple's ecosystem. Preview alone is a superb app, Terminal.app is fast and reliable (I have had a lot of performance issues with iTerm2), Mail.app is my preferred mail client (I haven't found any other that I like as much on any platform!), Safari is my browser of choice (although I wish it could still run uBlock Origin), Keynote & Pages are by far my preference over Powerpoint/Word or Slides/Docs.
There are some apps that are less impressive though - Photos is merely okay but I haven't found anything else that does the job better, and Numbers is quite sluggish with larger sheets.
There are some apps that are less impressive though - Photos is merely okay but I haven't found anything else that does the job better, and Numbers is quite sluggish with larger sheets.