depends on whether or not you edit your photos at all. if your going to drag them all through PS or LR anyway, why not shoot raw and get the most editing data possible? if your going to just pop them onto your computer or FB straight out of the camera, then shoot JPEG.
Both. Raw for memories I really want to keep and for those shots that I'm trying to do something with in PP or to give be a bit more headroom. Jpeg for the snapshots and holiday pics.
I've got to the stage where I just can't justify keeping all the raw files anymore just in case I get time to edit them.