I'll join in saying I also daily Safari for generale usage (with only two extensions installed 1Blocker and Are.na) and I have basically zero issues.

I also do dev work in Firefox + Safari. I use Firefox mainly because I prefer their dev tools to do frontend work. Chrome I almost never use. This insistence that Safari is the new IE is honestly baffling. Yes Safari is not perfect and yes Apple is Apple. Still, Safari is far from being a train wreck.