At times I think that if our LR4 would fetch some silly amount of money, maybe we ought to sell "high" and get something new. Trouble is, to get the cargo space it gives us while having a decent 3rd row and a nice ride/interior, we are probably looking at a HUGE SUV costing well north of $75k. As an occasional swiss army vehicle, the LR4 is hard to beat for us. And given the low miles (45k) and that we ordered it new, I am not terrified of keeping it a lot longer since it doesn't cost that much to own. Down the road, when the kids are off to college the LR4 may make less sense and would be ~15 years old, so maybe we'll thin of selling then. But at this point, I'd think the depreciation curve is pretty damn flat and since I do my own work, it's worth keeping around.
Exactly how I feel about my wife's LR4 with 32K miles on it.