There is no harm in buying bitcoin at this time, because bitcoin prices are predicted to continue to rise. So do not worry we will experience a loss because the profits will come to us in the future. Stay patient and never panic to sell the bitcoin we have. Buying as much bitcoin as possible with the money we have can make us achieve satisfactory results.
I wouldn't trust the predictions too much. I could remember similar predictions from 2014, which claimed that BTC will rise to $10,000 per coin by 2017. It actually went down by 80%, to $200 per coin in 2016.
There is a lot of difference b/w 2014 to 2017. Just 1 year back the price fluctuated in b/w $500 to $600. But now it increased 400%. What you say for this increment. You are comparing 2014 price but compare to 2016 you will know how much percentage the price is increased. I don't know others that they have trust on Bitcoin or not but I believe in bitcoin.