Can't they figure out a way to do that in pure c++ yet? In other words why does C++ lack reflection, and only seems to have a half baked RTTI? Perhaps the QT guys and other c++ application programmers didn't lobby C++ standards committee strongly enough for that?
Sure, but there's 1) a performance hit because things that can be done at compile-time currently, have to be done at runtime, and 2) syntactically verbose/cumbersome. They've decided that these things are not worth it to most people.
Besides, it still is C++: you can totally compile everything without the moc (although its probably not very useful to do so), since the extra keywords are just #defines.
I've personally never had any issues with the moc (but I did only ever use QtCreator/qmake, so...)
