If you are willing to take risk, then buy bitcoin but if you are not willing then dont buy it.
Rightnow is the best time to buy because its price is droping, but make sure that you have a strong mind, strong hand and strong heart because getting profit will not be so easy.
I really do not think that there is such a great risk right now when it comes to buying bitcoin, the price is very low and the market is not moving as much as it did in the previous months so bitcoin is a very good bet right now obviously you need to only invest whatever you can afford to lose there are many people that have not done so and have gotten so nervous when the price goes down that they suffer a loss when they sell.