I had similar feelings a couple of years ago. I was a .net programmer for 10 years and seriously considered going to dental school.
Instead I bought a MacBook last thanksgiving and built an iPhone app that Apple featured and subsequently sold very well. The Mac world was a completely new area as well as mobile (was doing enterprise software). It has made programming fun because I also run a small business with it. In addition, running a small business I'm using open source software to build my new website and learning python on django has been a pleasure.
At least for me programming is fun again, but also because it's helping towards my goal starting a company.