Well the entire stack is open source so no one needs to port it. I'm pretty sure that people like it because, it along with cocoa, makes iOS a great platform to

Well the entire stack is open source so no one needs to port it. I'm pretty sure that people like it because, it along with cocoa, makes iOS a great platform to develop apps for. But as for spreading objc, most of the features it has have been in dynamic languages like perl for many years longer. Perl even has objc lib bindings and much better integration in unix, albeit not necessarily for making apps. I think the popularity of objc is hindered more by the fact that people would be moving a step back, if they were using it for something besides what it's designed for (cocoa apps).