answer:There’s a lot more to OS development than user interface. I don’t like Adobe’s software particularly, but even if I did I don’t think I would want to use an OS developed by them. Compatibility issues and bloatware are pretty common issues with Adobe software; they are bad but acceptable in end-user software, but much more problematic in an OS. As far as interfaces go, I use Linux so I have my choice among a great many. I use GNOME and put up with it. Sometimes I use KDE which is much prettier but also somewhat annoying. If the interface was a huge hairy deal for me I would spend some time and shop around, looking for a favorite, and probably settle on fluxbox (ick.) I have to say though, that if the Mac interface isn’t nice enough for someone then I don’t know that any of the Linux DE’s would be satisfactory either.