I always shoot in RAW. ... I do this because I'm an amateur and I like to experiment and I have a happy trigger finger.
It's good to know this about yourself. When you're learning, spray'n'pray is a natural trap to fall into.
Some of the photos look just fine the way they are, but is it necessary to post-process it in RAW? ... I like to edit pictures, but if I like 70-100 photos out of 600, I do not have time to edit every single picture. ... I am not uploading the pictures nor sending them to someone.
Ok, here's the thing I think you have to learn.
Not every shot looks good or needs to be kept.
We love our own images, true. But you do have to stop and think about whether or not you actually want to keep all 600 of those images. Has taking them taught you what you wanted to learn? Which ones are the ones you are going to send to people or upload? Which ones are the ones you want to print out and display on the walls? Which are special because of the subject matter, even if the shot isn't great? Those are the definite keepers.
Where you're probably getting hung up is which ones might you change your mind about in the future. But in general, if you're not a pro, you're not shooting things that are likely to become new material, or whatnot, then you're probably ok deleting them.
If you don't care enough to process it, is it really worth keeping?
When I download my images, my first pass is for obvious dumpers: out-of-focus, mistimed frames, accidental shots, badly exposed, etc. My second pass comes down to which shots in my experimenting are the best alternatives of what I was attempting to accomplish. I may only keep 1 in 10 images, if that many. I've had days where I've dumped the entire shoot.
(Hopefully, you eventually get good enough to mentally do similar edit passes before you push the shutter button...)
Then you process the images you care about. You may not process each and every one, but you should at least have the intention to revisit it if you're going to keep it around.
And this same principle of picking your best to work on should guide you on what you upload/share. It will make you look like a much better photographer.