I guess, when you have known nothing else, it is difficult to compare what response autism produces in you, to the response felt by those without it. Your "normal" would not be their "normal" experience, (apart from the chemical reactions because that is an automatic response in all creatures. Its what keeps the human race and all other species in existence.)
On the other hand, altruism, (the giving part of us) is a condition of the heart.....not the physical pump, but the inner psyche and workings of the mind and its relationship to those around us. The mind controls many things and so does the heart, so when you combine them, you have the whole person.
Some people are described as "all heart" which means that they feel deeply for others. We also find some people who are described as "cold hearted", displaying little concern for anyone but themselves. If this latter condition is not the result of a physical or mental condition, then this person will be judged by God as unworthy of citizenship in his kingdom. He does not want cold hearted and selfish people in his kingdom. Why would he?
When either one (mind or heart) is impaired, the person themselves become impaired to some degree. Its nobody's fault. We are at present in an imperfect state, (sadly, some way more than others) we are at the mercy of so many things that are beyond our control. So many people are saddled with situations and conditions that they did not ask for, or deserve. So how will God deal with them? He will judge each one by the condition of their heart.....he sees past the impairment to the real person and evaluates them on the person they would be without the handicap. So there is no injustice with God, and there is no "hell" of punishment waiting for the "injured" or impaired in this world (or anyone else for that matter). There is a new world coming where all infirmities and illnesses will be healed and all forms of oppression and hatred will be eradicated, never to be seen again. (2 Peter 3:13)
God wants to give you hope of a better life, not threats of punishment and despair. We need patience however, because nothing happens quickly with a God who dwells in a timeless place. 'A thousand years is like a day' to him. (2 Peter 3:8)
All he asks is that you stay on the right path and do your best not to break his laws. He will reward those who want to give him their obedience, because he wants to give you a better life. He asks so little in return for what he will give back.