Lightroom is such a great tool for organising your photographs and for making changes to them such as exposure, brightness, contrast, cropping and for adding filters such as sepia and black & white to name just a few.
Lightroom does help me turnaround photos very quickly. I can go through them and rate them very quickly and then get it to show me just the photos I’ve rated. If they need corrections I can now do that to only the ones that I’m interesting in and if necessary apply the changes to multiple photos quickly.
Here is a video on why I use Lightroom.