I just don't like the new San Francisco typeface. Everytime I read about it here on Ars, the typeface change is downplayed, like it's a minor difference, it's a bit less round, less soft, marginally more legible on non-retina devices etc. But nowhere does it say it looks uglier.
I'm aware that it's not a big deal, and that everyone will have to update regardless of the font, and everyone will have to make do with it, like it or not.
But, for a company that puts so much effort in their design of every little detail, and claims to have superior design compared to everyone else, I have to say, the old typeface was better!
There Apple, I've said it first.