Do you need Adobe Lightroom?

Do you need Adobe Lightroom? - Why would you need Adobe's Lightroom 3 if you already have a good photo editor -- whether Photoshop CS, Elements or something else? Here's one way to tell. If after a holiday weekend you've got 20 or 30 digital photos, you probably don't need $300 workflow management software. But if you wind up with two or three hundred photos -- and find it a bear to pare them