You know that <probably> everyone here will say it is worth to learn Qt?

That is because Qt is helping us solve our problems, but if you ask someone that knows MFC (or WPF or wxWidgets or someOtherFramework) on an dedicated forum - you will most likely get an answer like: MFC/WPF/wxWidgets/someOtherFramework is worth it and Qt doesn't.

Anyway, you should be the only one that can answer that question, we can only enumerate some advantages Qt has over the other frameworks that we used. So think about what are you trying to achieve and you will find the answer.