One of our many projects is improving our fireplace.
Right now it has water stained bricks (from a leaky chimney) and retro tile on it. :P
I would loooooove to re-brick the front with some stone like this:

but the conservative side of myself (and my wallet) says that tile, like this is the way we should go.
Figure the sq ft of the area were doing. Times the cost of the tile. Then times the cost of the rock. Subtract those numbers for the difference.
Divide the extra cost by the number of days left of your life, figure the cost of your unhappiness per day. Figure this by how many times you will see it a day and shrug with unhappiness, minimum a buck a shrug. Then multiply those numbers (days of your life times how many times a day you shrug)....its overwhelmingly worth the added cost to be happy.
Plus down the road you would have me redo it anyways
I'm just sayin