Truth be told, I have stability issues with Safari (and sometimes opening up new blank tabs takes 5 seconds... kind of ridiculous) but I prefer that my laptop not get too hot.
I'm running Firefox without flash for months already, everything is fine ;)
I do run AdBlock Plus though, and am hoping that content blockers in OS X El Capitan will help with this even further.
It's well known that Safari is significantly better than Chrome when it comes to resource consumption. There are even some podcasts with ex maanagers of the Safari team where they talk about Apple prioritising battery life over anything else.
And icloud tabs, reading list, etc are very handful, because sometimes I want to use iPad instead of computer.
Funny, because that's the exact issue I have with Safari but didn't have with any other browser.
I've never found a legitimate use for pinch to zoom or rotate on OSX.
I am considering safari seriously as a primary browser unless I can find a way to optimize Firefox. How has your experience with safari been?
So I gave Safari a try. And it's actually... fine. Nothing mind-blowing whatsoever, but has all the features I needed in Firefox. My one irritation is the trackpad gestures I don't want. A good few times now I've accidentally gone back by swiping with two fingers, zoomed out to tab selection by some oversensitive pinch gesture, etc etc
That said, there are a couple things that always frustrate me with stock Safari:
1) You can't reopen an arbitrary number of recently closed tabs. (You can use Command+z to "undo" closing one, but if you've closed two, or three, you're out of luck. I prefer how Chrome handles this. Though perhaps there are good reason to avoid this feature.)
2) Tabs don't have a favicon. They may be ugly sometimes, but with many tabs open favicons really simplify navigation. Of course, this can be fixed via 3rd party SIMBL extensions.
Otherwise, using Safari has certainly been better than I expected.