Also, regarding the "commandment" thing: Is not our GREATEST commandment as Christians this:
Matthew 22:36-40 --“Teacher, which is the greatest commandment in the Law?” Jesus replied: “‘Love the Lord your God with all your heart and with all your soul and with all your mind.’ This is the first and greatest commandment. And the second is like it: ‘Love your neighbor as yourself.’ All the Law and the Prophets hang on these two commandments.”
And since Christ HIMSELF says that loving God and our neighbors are the GREATEST commandments, then obviously having children is not a requirement of Christians. In fact, I believe it's Paul (or perhaps Peter, I always get them confused) speaks about not being married if you don't have to be. And since, by God's standards, children shouldn't be born outside of wedlock, then I think that this whole point has some weight to it. If you choose not to marry because you are perfectly fine living out your life as a single person, then where's the harm? You're not hurting anyone in any way by living that way.
And also, since you see having children as some duty we are required to fulfill to somehow please God and whatnot, what do you think about the people who choose to stay single for their entire life? For example, the people who decide to dedicate their lives to ministry and missions and choose not to marry (or do marry, but don't have children for the sake of travel/conditions of the countries in which they travel to)?
They don't have children, and yet they are fulfilling the greatest commandment we are given. Are they not pleasing God?
I'm sorry, but if the only reason you can give for people to have children is "God told us to" (which is nowhere specifically stated in the Bible, unless regarding the times of Adam & Eve, and after the flood [which were obviously stated for a reason]), then I'd say you should probably re-evaluate some things.
Either way, I think this thread is becoming an endless loop: Some people don't want kids, some do.
Why not just leave it at that and let people live how they choose to?