Is bitcoin a safe investment or just waste of money?

https://99bitcoins.com/bitcoin-price-prediction-for-2017/

So, many people may not belive in this "internet" currency and don't belive that it will ever be an acceptable currency in the real world, because bitcoin isen't controlled by all these corrupt banks, it's controlled by the people. Which in my opinion is the reason why I think bitcoin is one of the safest investments right now.

According to a currency
professor that was talking about bitcoin on "99bitcoins" he is expecting the bitcoin to rapidly increase in price for the last 2-3 years forward.

SO GUUYS BUUY BUUY BUUY!