Is Bitcoin the final form for humanity?
Final form in terms of digital currency and technology development or what? If that's where you're heading to, we only have bitcoin today and don't know or see any other advanced technology outside the use of digital currency with blockchain technology for now, but maybe in generations to come, something more different may come but for now we have bitcoin to embrace for the present and future base on what we are having.
Decentralization has long been dreamed by all different social models, is there another step to be taken?
Can humanity (humans) learn to hang on and manage their finances?
Anything you could want to understand more about in this aspect has to be with bitcoin, i have to advise you to learn about bitcoin and understand it first.
Or is Bitcoin an experiment to show that we're not capable of managing our own belongings and do require central authority?
Bitcoin has gone beyond the imagination of being an experimental digital currency, it's real, valid and acceptable, it's a legal means of making payments, transactions, and also serves as legal tender where it has been adopted for such use, bitcoin is a digital currency.