I use Safari full-time and am pretty happy with it. Pinned tabs, the keyboard shortcuts, developer options, ghostery extension, I find everything pretty neat.
I would use it since it's the native browser but last I checked it didn't have any proper ad blockers due to apple shenanigans. I would consider swapping back if I could use ublock origin.
I use Adguard with Safari 13, which has a bit of a clunky startup but doesn't seem to affect performance once everything is running & does a decent enough job of blocking trackers/ads.
This is the one reason I still use Firefox. They care less about privacy, but the inability of Safari to have a proper ad blocker is a deal-breaker.
I'm a full time Safari user. I love the "Share" button built in which lets me easily AirDrop and iMessage tabs I want to share between devices or with friends. It also feels faster on my MacBook and uses way less RAM. I open Chrome tabs only occasionally if I need specific extensions (Metamask for crypto stuff), run into webapps that simply work better on Chrome (Shopify for example), or to use the dev tools.