Bitcoin is a good investment because
1. Price is looking strong
2. Bitcoin have recovered quite nicely from that big dump happened few months back
3. After the price touched 1100$ it came back to 700$ but the price became stable now at 900$+
All the facts show that bitcoin will always remain a safe place to invest into.
As long as people interested with bitcoin, it's price will always go up because the limitation of the amount will make the demand easily increase. Bitcoin good investment because that reason.
Indeed, that is why bitcoin is getting more wise choice to choose to use as investing crypto coin and the fact of being decentralized of this bitcoin that is why many people believe on the potential of this coin.
And we can see it thru those past investors who are in a success and stable.