Bitcoin is best investment at a moment which has surpass gold and people who had more faith in gold are also diversifying their investment in bitcoin to get best profits in quick time which was never possible with gold and that is the reason the users of bitcoins are increasing day by day.
Its a right time to invest the reason is clear the price is increasing and bitcoin is growing . Last month the price was something 4000$ and not its cross the range of 6000$. I my self invest in bitcoin last month and make a good profit with it. But i suggest you don't invest your all money on it and keep taking out short profits along the way.