I actually find a bump better for putting your phone down on a flat surface, and my logic is this:
If your camera lens is flat to the body of the phone, it's more prone to being scratched on a table. With a bump, the lens becomes slightly elevated as the phone balances between the bottom of the case and the edge of the bottom of the camera bump, giving the lens(es) a tiny clearance
If your camera lens is flat to the body of the phone, it's more prone to being scratched on a table. With a bump, the lens becomes slightly elevated as the phone balances between the bottom of the case and the edge of the bottom of the camera bump, giving the lens(es) a tiny clearance