Do you also think Heroku is boring because it's just Ruby hosting?
Taking the largest, most vibrant blogging (and now general website and for some CMS) platform on Earth and trying to not only make it awesome but contribute new features and plugins back to the world isn't big enough for you?
Finally, you should know that for me "doing something bigger" isn't a motivation. I don't have a need to "change the world" or somesuch thing. I want to do something valuable, something understandable, something fun and interesting, and yes of course also make money.