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.
Yes, this is why bitcoin is the best choice to the most crypto coins, being decentralized and secure usage of it.
We cannot deny the fact of being top of bitcoin of all over crypto coin now, the most trusted coin out of those and continue price value of it. And so lucky are those who bought and invest coin in early age.