I think it's important to remember that Solomon is not pampered. He is also not stupid - he knows that ruling is not the same as achieving royalty - that's why he so desperately wants to give up ruling. But ruling creates responsibilities that are hard to give up. I think this is where our morality biases come into play - not that there's anything wrong with our morality - we want our rulers to care, to feel beholden to their subjects, but apparently, such laudable virtues are not the way to Royalty.