I use Qt with some reasons. I am KDE addict, but it is not only reason making me use Qt. I use Qt because it can deploy everywhere. It is C++ toolkit, so should have mastered C++ (or Java) at first, even one code. Try to learn Qt Nokia development framework, build small application soon, and feel better after that. Qt, for the future.
Why you should choose Qt? Because you could make, sugar sweet. It means creating a great user experience with user interface (UI) design. In addition, it brings you to new paradigms for portable UI’s. Go Qt!