In my opinion any investment is good these days, because the bitcoin is gonna rise soon or later.
What people already said is that good to consider to buy more bitcoins for a long term because you are gonna hold them long and maybe the price will never be so anymore again.
The really good thing about now is it doesnt go back to the price like below $400. It is just staying in some level or it just go up. That is why it is good to buy now rather than later or in the future.