When i join steemit in January the one Steem Dollar was equal to 7 USD. After some time it went to 5 USD then went down to 2.5 USD. After a while it gone to 5USD and remain undisturbed for a while.
[image Source:- https://newatlas.com/iridium-dinosaur-asteroid-cancer-treatment/52040/]
Now it's been falling like an asteroid from space, falling faster day by day. I am afraid if it crashes on ground, i hope some miracle happens. If it crashes (goes to zero) everything will go in vain.
I hope the asteroid is a comet which will redirect to, after reaching certain distance.
Could go lower I think steemit growth is slowing down but all coins are down alot right now.
If All coins are down then it may rise with others.
I think that it is not possible to crash, or like you said to go to zero. I believe that it is just fluctuating...an asteroid that is pretending to be something else...
I never seen it to go below 2USD.