Back in 2012 I was talking to some Adobe reps at an event here in San Diego. I got a very interesting delineation from them about Photoshop Elements, Photoshop Lightroom, and Photoshop: "Photoshop is the whole shop. Lightroom is a room in the shop. Elements are pieces in the room." Do you want the whole shop, just a room, or just some pieces?
Interesting comparison. I have been using Photoshop for the past 18 years. This was before lightroom came out. I have never been able to make the change to using LR. It just seems more time consuming to me to start with LR and then go to PS and then back to LR. A few years back, at a conference, one of the *photoshop guys* was giving a lecture on LR. After the class I went up to him, explaining I don't use LR, I learned on PS and that is where I am more comfortable processing images. His response...* I have to teach LR but I use PS for my own personal editing.*