[hirvi74]

I find the ecosystem integration and cohesion to be the most compelling reason. Everything "just works." Apple keychain is good enough that I stopped using other password managers and works great with Safari, Messages.app and Mail.app integrate well with Safari, AppleScript works well with Safari, etc..

I do have other browsers, but I only use them for specific needs. Like I keep some version of a Chrome-based browser around solely for if I need to Chromecast something. Other wise, I do not enjoy using third party browsers like Chrome, Firefox, etc., which I use at work all day.

Safari's web developer tools are not my favorite compared to other browsers, so I try not to develop much with Safari other than testing.