If you hold bitcoins for around five years, the original price might double or triple or even be ten times the original, on the other hand if you hold dollars for 5 years the price won't increase enough to make you a profit like bitcoin does.
yes that's true, the value of bitcoin is increasing in year by year and as we all know bitcoin is the one of the promising investment especially for long term investment. dollar is like the other fiat, it is so difficult to increase its value.