I use Photoshop CC for editing photos. Everyone seems to rave about Lightroom for DAM & editing but many then go on to say that they often do additional editing in PS.
I believe PS is a more capable editor but is there anything you can do in LR that you can't do in PS to make using both worthwile?
It's like people are still comparing LR and PS as if they're a F-14 Tomcat and a F-18 Hornet when in reality, it is more like trying to compare an aeroplane against a helicopter!! Or like trying to compare them as if it's like a Mercedes-AMG F1 car against a Scuderia Ferrari F1 car, when it is more like trying to compare a Formula One car against a MotoGP motorbike. Or Word against Excel.
They are different from each other, you can't say PS is better than LR, and you can't say LR is better than PS, in a similar way as you would say F-18 is better than F-14, or the other way round. They're not meant to be rivals, they do totally different jobs.
Lightroom is really more of a catalogue system, a database of your photos, a filing system. It's there for you to view all your photos, search for the photo you want. Like we used to use a contact sheet to search for the photo we want, in order to find the negative we needed for printing. This is LR's main and primary purpose, it exists as a filing system, with editing software built-in and as a secondary role. Granted, some people would claim that LR's editing is better.
Photoshop is really more of a raster graphics editor. Granted, in the past, it was built as photo editing software, but nowadays it is no longer is a photo editing software by itself, it's more of a raster editor that not only is for photo editing, but also for other artwork, such as drawing cartoons, creating painting, other digital art, graphic design, etc.
Actually very much more like trying to compare using a 3"x5" cards to search for your negatives (Lightroom) against a pen, pencil, and painting brush (Photoshop).
I use both, I use LR mainly to look for photos, and edit them if needed, also to print them out, or export them. I use PS mainly for photo manipulation, doing graphic design, drawing, painting, and I admit, sometimes also for editing the photos if needed. I edit my photos either in LR or PS, either way, but I really use LR for searching for photos, PS for doing art.
Therefore for me, having both is worth it.