Where do you keep coming up with the "need to raise kids from scratch", or "humans have to be a blank slate for it to work" stuff? They just have to be regular humans just as they exist now, only living in a system that is well designed and utilitarian rather than ill-conceived and inherently unfair.
I do think anarcho-communism will be a much more stable society, or I wouldn't suggest the improvements it implies. In comparison the current form of society is highly unstable. Why on earth would you think a system that takes advantage of most of society for the benefit of a few while leaving most people without basic care is stable while one that is fair and takes care of everyone's needs is unstable?
That doesn't make any sense to me.