haha jokes... well I see why fb wanted to create their own framework since the whole site is in php and it would take em a lot of time to translate it something else (i think most nowadays is JS anyways) but srsly, why people are trying to make faster frameworks for php ... no idea. It doesn't get any faster due its design. At least join one of the open source projects and help that.

Combine all those working on those open source frameworks for years and all together create something fast...