One for Sorrow

I don't know if this is going to make any sense, but I've been thinking about love in HP, and perhaps with the Malfoys it's that love paralyses them. Ambition drew them to Voldemort, but when Voldemort turned on them in HBP they were confronted with the truth that what actually mattered to them was each other. Or, more accurately, that what mattered to Narcissa and Lucius was their child, and what mattered to Draco was his parents. With Narcissa, it's pretty clear-cut: to save Draco she throws herself on Snape's mercy in HBP and betrays Voldemort in DH. With Lucius there's an element of self-preservation, and he grasps at the hope of ambition when the Trio are brought to Malfoy Manor. Draco struggles with his conscience, his love for his parents and his ambition for himself. His conscience prevents him from killing Dumbledore in the Astronomy Tower, and identifying Harry in Malfoy Manor, and causes his revulsion at being forced to carry out torture by Voldemort. But I wonder if it isn't his love for his parents, and the weight of the love he knows they have for him, that holds him back from truly acting on his conscience. The Malfoys love for each other frees them from their slavery to ambition and Voldemort, but because it is so entangled with fear, confines them in their own tiny world.