In 2030, USD won't be the measure of value anymore. But if there is a hyperinflation, then yes BTC can be worth $100,000 each or even more. It is very possible. But you should measure your BTC in 2016 purchasing value of the dollar, instead of the dollar.
Could never agree this. However high the inflation might be USD continues to be the measure of bitcoin even after several years from now. No other currency is strong as dollar right now.
I guess 10 BTC is too little to be a millionaire in 2030. I am not sure if the price of bitcoin will arrive at a price of $ 100,000 in 2030 may need more than 100 BTC if you want to be a millionaire by the time it arrives