Fewer Students Taking CS Classes

If CS jobs are in high demand and CS enables people to do amazing things, why would fewer and fewer students be taking the classes?
Many students think of Computer Science as a field where people are locked in basement alone and asked to writing code in a black DOS window while drinking jolt cola and eating cold pizza.  Many students do not view Computer Science as a creative and dynamic social process.  We have to do a better job of showing them that Computer Science is a field that has far reaching positive societal impact and that it involves teamwork and creativity.