I use Chrome because:
1. I'm a developer and I have to use Chrome because it has far better dev tools than Safari
2. I'm too used to the Chrome UI to change
Funny enough, I use Safari on my iPhone. It's not really ideal in terms of browsing syncing for me.
I use Chrome too, for my web development (and when a site doesn't work on Safari). For everything else I use Safari.
At work I use Edge instead of Safari (No Safari on Windows 10) and Chrome for the same things I use it for on my Mac.