I’ve been a long time user of Apple Calendar but I’ve switched to Google calendar for 2 main reasons:
It’s easier to access on different devices
You can set colors for events.
I’m now using a Pixel phone and the Google calendar works flawlessly on the Pixel phone, and iPhone, as well as an OS X computer.
As you can see above, I color code my event according to different areas I’m working on to help plan my week. You can set the color of a calendar in Apple Calendar, but not the color of an event.
It’s super easy to sync Google calendars between all MAc devices and Google devices. You just add the Google account to your OSX computer, and the calendar appears in the Apple Calendar app. But if you want to see different colors for events, you’ll need to open the Calendar in a browser (Safari or Chrome) by going to calendar.google.com
You can do all that on Apple’s calendar too!?