I can't tell you to just have faith in Apple. Obviously, given the route they've chosen with Siri there might be some problems ahead privacy-wise. I for my part

I can't tell you to just have faith in Apple. Obviously, given the route they've chosen with Siri there might be some problems ahead privacy-wise. I for my part, will stick to OS X for the time being but if the time came Apple's OS was not suitable for me anymore I'd switch to Linux and I suggest you take a second look as well. In terms of UI there are so many options for Linux that there almost certainly is one that suits your needs. Development of non-Windows software under Windows despite all the improvements in most recent versions at times still is a pain-in-the-ass: From an inferior CLI (compared with those available on UNIX and UNIX-like operating systems) to missing development tools and all sorts of Windows-specific work-arounds required to get Rails or Node.js working, let alone run actual apps.