Oh YEAH?! If someone makes good choices, gives homeless people lots of food and money, and only does good deeds because they want to, not for fame, and they don't believe in Jesus, all of a sudden they're Satan's child? This is just wrong. If all my good deeds are destroyed by the fact I don't believe in Jesus, then the system of goodness your God made is stupid!
I can go to Heaven if I'm not Christian. If a Muslim or a Jew or any other religion is a peace activist, started a company to help kids who don't have limbs, etc., they can go to Heaven, so long as they're good people.