It's scary to catch a falling knife, but you buy now and hold a few yrs, you're good to go. Even if it goes to 2-3K, u'll still make off like a bandit.
Actually, I am not saying that it is not worth it to try to catch a falling knife. I just know that it is scary, and frequently peeps get criticized for attempting to buy the dip when the bottom remains so uncertain.
In the long run, profit for sure, but it is just a matter of feeling good that you more or less got a decent price and did not waste too much fiat buying every single dip when you could have waited a bit longer.
My hands were pierced several times while catching falling knives during the big slide from 20k. I'm filing it all under dollar cost averaging, and I'm trying to keep it up now. It's much more satisfying. There's a good side in every corner.