Bitcoin flawed

If there is a finite amount of bitcoin, and no more will be created, the 21,000,000 available, of which only 1.28m remains to be mined are limited in their monetary value? The idea that bitcoin will become a main form of currency cannot be feasible unless proportionately each coin is disected or sub-sold as a percentage of a singular however what this does is put current holders at a significant advantage of overpricing and this would eventually, if bitcoin became a world leading currency, create untold wealth but in comparison untold poverty as a consequence...so how would it ever become a leading form of currency with such limitations??

Please don't get all defensive about your precious coin...I'm just gathering perspective.