yeah i agree, it is best way for investment money for future. when you will be old man that time if your son or your family will not take care you. that time for it is very good for you and you can spend bitcoin and it will totally help you.
Keep in mind that don't rely on bitcoin to take care your future. It's just an option. What if the bitcoin price is still on this current rate after 50 years?
While being a bitcoin optimistic, while savings lots of coins, accumulate and grow your fiat to secure your future so if ever bitcoin will bloom or not in the future, you have your backup funds and much better more money if bitcoin price will rock.