BTC has entered the second 4-year halving cycle and will rise to 1 million U.S. dollarsin the next 15 years. What do you think? Friends are welcome to discuss together. 
Within the next 15 years, most probably Bitcoin will hit $1m around 5-10 years IMO. If you take a look at Bitcoin's growth history, It is capable of doing multiple folds in growth. Say for example, in 2016 Bitcoin was $1,000 and then the next year It rises up to 19x and hit almost $20,000 in 2017 of December.
Now, the most recent pump made 3x growth from the last ATH.
So, If you do the Math 1 bullrun that makes a multiple times growth for Bitcoin will draw us closer to $1m.
IMO, 15 years is far too long.