As we see, halvings make the price go up and then the price stabilizes in a higher floor, and we haven't even seen the real party yet.
So by the time we are at about 2035-2040, the mining reward will be so small that 1 unit will have to be valued by A LOT of purchasing power.
Considering that only 21 million people can own 21 BTC, those holding 21 BTC WILL have to be rich.
And also considering the ongoing crisis all over the planet with fiat currencies, and seeing how we have big names now proposing to go back to gold standard, BTC will be the digital gold.
http://www.zerohedge.com/news/2016-06-27/greenspan-warns-crisis-imminent-he-urges-return-gold-standardAll the variables for an huge price in the long term are there. All the ingredients to make BTC a supper asset valued in 6 to 7 figures just like BRK.A is nowadays, is there.
In other words, be sure to be holding a decent amount for the very long term and don't lose it by trying to be a smartass trying to play the markets, only trade with small % of your BTC holdings.
Hold long term to win.