Architecture really has to do with solving problems and analysis.
It has some of the implications of chess, and some of the implications of a story by Arthur Conan Doyle. It also has to do with a scientific system of understanding information. Those are satisfactions that people usually seek independent of their profession, and architecture just happens to include some of these - the most basic methods of finding out about the reasons for things. The intellectual satisfaction is very important. The endless variety that occurs, new sites, new clients and new programs.