why wait for bitcoin down to invest ?. if you think it will go up in the future, whenever is the best time.
so every time is the best time, the most important thing you have to believe.
It's a very popular strategy to buy at the lowest price before investing and it was just few hours ago when bitcoin has finally touched a flat of $10k. And whomever bought at that price can now have a relieving breath because the price has been up by almost $300.
But what you've just said make sense. For someone who is really clear of his belief about bitcoin in the future and sees it's value tremendously few years from now, wouldn't look at today's price instead will act to buy before it pumps.
Possible to build more with your portfolio when you see the dropped is still ongoing as it will give you a lots of opportunities to get more benefits once the entire market bounce back and bring huge lift, bitcoin investment to those who have a optimistic believes are always aiming big.
Buy low and wait till the value goes higher and reached your expected price, you can go short or long it's all about understanding your position.