Yes ofcourse, i would love to save my whole money in bitcoin and wait for 5 to 10 years to grow my money. this is a good question you've got. i will recommend this to my family also about this matters. coz they know that i'm saving my money thru bitcoin..
its profitable to save for a long time because bitcoins prices are on the ever increase ride and no matter how it tumbles it will rise back up again and so you ll not loose if you invest into it in the long term.
that's right people will realize that bitcoin has a real value that it will give as max potential, no matter the price is still bitcoin is always pumping and keeps going up trend.. this is the best investment of a lifetime..