I agree. If you look at the bitcoin you can increase your bitcoin value instead of usd as of the moment so when the bitcoin price increases again you can earn a lot more money.
In bitcoin investment you should always have maximum tolerance to be patient as we can't predict the price if this will go up or go dip. Yeah we always want the price to go higher as possible but there are many factors that beyond our control but once the market goes on rally we can be sure that the value will go higher and get our profits. Indeed bitcoin still the best investment as compared to the conventional investments.