Saving of bitcoin may lead one to profit or loss it can not be predicted because its rate is changing and may increase or decrease. But saving for future is good thing so saving of bitcoins is good. 
That's true bitcoin can be the best investment for future as price is increasing at a moment and once it becomes more popular its price will go even higher so try to collect as much as you can as in future it will become more harder to get small portion of bitcoins.
I'm still not too sure to saving bitcoin in large numbers, I'd always swap its 70% in FIAT savings, still uncomfortable with bitcoin fluctuations, I hope I'm wrong about that. I believe more in bonds stock, property or gold
Mindless saving is not a very wise idea overall, either
While it is certainly true in respect to Bitcoin (since it is primarily a speculative asset with severe price fluctuations) but the same is still equally applicable to fiat as well. With Bitcoin, you can easily fall victim to price volatility (for example, when you panic sell), but with fiat you are guaranteed to suffer from inflation with fiat losing its value due to depreciation. Short term you may not feel the effects of inflation but that doesn't mean that it is not there or that it is less ruthless