As we know trading and gambling are too risky, it's better to just hold the bitcoins as said the first quote. We don't know what will happen with bitcoin price in the future, but most investors think bitcoin price will continue increasing for the next years.
What are very good estimatives and many persons agree, and I think it too.
If you don't want to take any risk of loosing your bitcoins then its good to hold them in wallet without doing anything to it as if you invest it in trading or go for gambling then there is a high chance of loosing money as both methods involves higher risk especially if you are new to bitcoin.
Investing in a gambling is a big deal especially if a gambling have a big potential to hit the market and get attracted to its uniqueness.