If nothing else, try getting organised with future pictures
I have a lot of shots sitting here, there, and everywhere. At least they're organised into folders by date, but they still need keywording. Which is why as soon as I get my keywords organised in Lightroom I'll import the older photos in there (there are currently about 6,000 in my library, but a lot of folders aren't included because they're on an external drive). And occasionally I'll do a weed out of photos that just aren't worth keeping, but for the most part I don't do a whole lot of deleting right away.