Do you keep your Raw files after PP??

I'm currently keeping all my RAW files after I PP them to JPG but I'm not sure if I should delete them as I've already adjusted the photos and converted to JPG.

Just a question of disk space but will it mess Lightroom up when I delete the files.

Do you keep all your RAW files after PP conversion?

Very simply answer. Yes always keep them and do not delete them, that'd be like burning negatives from a film.

My RAWs get stuck into an Originals folder tree, which are then copied to a Working Files folder tree and any exports (jpg/tiff etc) end up in a different Exports and Prints tree.

Lightroom is only set to import and work from the Working Files folder tree and nothing touches the Originals at all.

If you don't have the original RAW then you can't process the image in a different way whilst retaining maximum detail and control.

Yes, of course. I will invariably find a new post processing action or technique I want to try.

Yes always........ Once finished with the RAW's I burn them to DVD (once I have enough to fill a DVD)

OMG YES!

I keep all my RAW files,. even if I don't end up doing anything with them.
I do delete the obvious bad shots, but anything else is kept and backed up 'just in case'.

Always!
I have three folders for any one shoot.

RAW

Processed Tiffs (out of DPP or C1 or Aperture)

Retouched

Yes, I have a similar workflow as GregSteer. I save them on a file server and locally so I have two copies and I've been exploring a database option for cataloging all the raws.

Yes - I keep them. As far as I'm concerned these are my negatives, and I may wish to go back to the "original source material" at some time in the future and try different things, like perhaps some B&W or other effects.

Once I trash them I only have the JPGs - that's fine, but I like to work with ALL the original data. As good as it may be, the finished JPG is only a portion of the original capture. But that's just MY workflow. Everything gets burned to DVD, and then stored on a working scratch drive, as well as a 500GB backup hard drive.

Absolutely, even the rejects. Never know when you'll want to revisit something

Yes, keep them. But now comes a question for you. If you are using Lightroom then why are you converting all of your images to JPEG? For customers? Printing at a lab? Convenience? Web? The only reason I convert to jpeg is web and sending to a printer service. Otherwise, they stay in Lightroom as RAW files or are further edited in PS as TIFFs.

There seems to be a consensus here, I always keep my RAW files as well. Some of my favorite pictures are ones that I took well over a year ago but recently re-edited them after learning more PP techniques. I would have kicked myself if I didn't keep my RAW files.

Absolutely keep them and like rparchen said, sometimes after you learn new things/techniques, it's nice to go back to some of your favorites and try something different.

I also only convert to jpeg for web or printing.

Yes I do

Wouldn't dream of getting shot of them!!! There are always times when you'll need one you took a year ago to enter a competition or something.