There is a saying that once an investment opportunity such as a new technology goes mainstream and your grandfather understands and adopts it... The gold rush days and high returns are all but over.
It's like those that had the foresight to invest in the early days of Apple and Microsoft shares... 20 years later, those early adopters made a fortune, but much harder to see fast gains today.
Remember this 20 second scene from Forest Gump
Here's the thing with Bitcoin... Most keen investors would like to double their money before jumping ship..... The get rich quick types.
At the current price at circa AUD$21,000.... What are now the chances of it doubling to $42,000?
Maybe it will, maybe it won't, but in comparison to buying an upcoming altcoin like Ripple at only AUD$1 and early days, you are getting in at the ground floor level like backing Apple in the 80's.
There is far greater chance and probability that Ripple will easily double to $2 in the near future.