I understand your position as a good Christian- it would be hard to swallow the philosophy of an avowed atheist. But Rand proposed a rational basis for morality that at it’s core is not hugely different than many Christian beliefs. Not all and certainly not some very important ones but there is more commonality than you might expect.
But you shouldn’t project your perfectly reasonable differences with Rand into the realm of Marxism. Her life was dedicated to the defeat of the Marxist philosophy.
False. The "core" of Christianity makes us responsible not just for our own morality but the morality of those who are supposed to love (ie: everyone). Not such a popular sentiment these days, but this was central to the worldview of most of the Founding Fathers. Rand is good science fiction to me, but our society is still mostly populated with people who are correctly guided by either their own religious convictions or the those that have been socialized into them. They are noticibly absent in the Fountainhead and Atlas Shrugged.