Learn C# instead: 0) easily very cross-platform (but you will have to pay), mainstream in mobile games via Unity3D; 1) not locked to one company: .NET by Micr

Learn C# instead: 0) easily very cross-platform (but you will have to pay), mainstream in mobile games via Unity3D; 1) not locked to one company: .NET by Microsoft, Mono by Xamarin; 2) open-source and welcoming feedback; 3) modern and innovative (not like Swift, but for real - introducing stuff like async/await, mixed dynamic/static typing etc.); 4) allows building mobile, web, desktop, butt software today; 5) first-class IDE, that will get an extensible compiler-as-a-service in 2015; 6) best in class automated refactoring via ReSharper.