Okay I tried a search, but I think because RAW and JPG are 3 characters the search didn't want to include them.

I've always shot in JPG, and I've been asked why I don't shoot in RAW by people. Well, to be honest, I've never thought about it.

What benefits are there in shooting RAW? I'm only a hobbyist not a professional, and I've always been okay with JPG files. I have an extensive Photoshop knowledge (being a graphics designer by trade) so I tend to be able to correct anything I come across.

And from your own experiences how quickly would it fill up my memory card? (I have an 8gb card)

I'm assuming RAW would be massive file size!