Photoshop not for photography? The clue is in the name!
And yet there aren't dogs in dog food.
That reasoning fails on so many levels -.-
Both Photoshop Elements (PSE) and Lightroom are good packages. I've had a go at the Lightroom trial, but I didn't feel that it added enough over PSE to justify the high price tag.
Obviously, this depends on your shooting habits and requirements. I've currently got about 10k photos in my library of "keepers" and PSE has had no problem keeping up with them. Perhaps when my work begins to involve thousands of photos from a single shoot (people like David Sizer take 4000 RAW photos in a single wedding) I'll begin to see the benefit of Lightroom. Until then, PSE is a better alternative.