I am a professional developer, currently working in ActionScript building Flex and AIR applications. I have worked with many different technologies and languages, but am always drawn back to ActionScript as a fun way to express myself.
I dislike the current AJAX/JavaScript trend. While it offers a better user experience than a static web page, the technology does not seem scalable. All of the new JS tools and libraries are just there to abstract the pain of working within the browser environment (and not very well). AJAX projects tend to be more complicated, take longer to build, and the final product tends to have more bugs then the same product build in a Flash technology.