Honestly, the final price of bitcoin is unknown. There are several factors that influence bitcoin price and these factors keep on changing. Like for example, the adoption of bitcoin in every country is increasing thus, this will give demand to bitcoin and increase the price. But once the target price is reached by many holders, they, then sell bitcoin that will definitely make bitcoin price lower. Bitcoin price will forever fluctuate so we cannot tell how much will the final BTC is.
Due to the volatility and uncertainty in Bitcoin rates, it is quite challenging to determine the final worth of Bitcoin. Studies, research, probability tests, or certain analyzations may be done in order to know it's final value, but there are chances that this may gain various errors as the fluctuations in Bitcoin rates may be sudden or unexpected at times; to which can totally affect the results garnered. As BitcoinPanther mentioned, factors that influences the Bitcoin price constantly changes from time to time. Not knowing what the final price of Bitcoin may raise the eagerness of people to continue buying or investing it for they are challenged with how Bitcoin works. Hopefully by the time Bitcoin reaches its final worth, everybody will be satisfied with its value.