Why do I need to shoot in RAW format? I'm not seeing much difference in these photos.
Hey, they look just like mine! LOL How do you like using the 510? How does it compare to all of your other cameras?
I think the advantage of shooting RAW is having more creative control
after the fact, as the camera compresses the information for JPEG, whereas with RAW, nothing is changed. So in pp JPEGs, you'd be forced to work with information that's already altered (and thereby limited), whereas in RAW, you have a blank slate.
I find it very handy especially for adjusting WB, +/-sharpening, +/-contrast, and a few other tweaks. It's helped me save some pictures I would have otherwise thrown away. I've gotten to even like the Oly Master software for this (but I sometimes also use PS which can fine tune a little better; eventually will probably move to just PS or LR, but not completely sure at this point. For now, what I'm doing works).
Fool around with some RAW shots - try a whole session. Shoot in Auto WB. Set sharpening, NR and such to zero. Then use the OM RAW development tool to pp. Play with all the options just to see what they do. They're actually the same as in camera, so in some ways it's easier in pp, and it also helps you understand the controls on the camera, too.
The one thing I haven't tried yet is bulk processing. That would make it very easy, I suppose, in doing batches, however I like to look at each picture and see whether it needs to be changed or not. (Auto WB actually does a pretty good job, especially in sunlight.) As I mentioned upthread, I've been doing a ton of baseball pictures and some of them can be a little challenging. With RAW, I can help them along a bit so they look pretty darn good most of the time (if I do say so myself

). I send out links of all the games to families so they can enjoy (and print) the pictures also.
I just realized in SmugMug that when they print pics, they change the colors a bit. "Enhance" I think they call it.

I figured out how to reset it so that doesn't happen. If they only knew how much time I spent already enhancing.
The other thing is that the RAW files take up a huge amount of space. I have a relatively new computer and a lot of times I get the pop up that says my C drive is running low on space.

This drives DH nuts so I have to try to keep up with my pics as much as I can, but I have about 600-700/weekend just with baseball (two double headers per w/e plus town games) and others for various events and stuff. We got an external HD (our second) and I move them there, but still, space is a challenge. But one that's worth it, I think. I still have a lot of work to do with my Disney pics from January, just basically organizing and finalizing, going through them one more time to see if there's anything I missed, then putting them to disc and finishing them on SmugMug, etc. Then I have to go through all of my pics and do the same. So that's the only thing, the pp has added a lot of extra time to all of this, but again, I think it's worth it.
However, with all that said, if you're getting results you like with JPEG, then I wouldn't bother with the whole RAW thing. I'm probably going to do an experiment with JPEGs now that I know what I'm doing more so with the camera. If you can get it right from the outset, it would make life a lot simpler. I guess it's just up to each individual what they like the most.