Thanks... haha, I bought some more steem and it was not a good idea in terms of return, so don't take my advice on this!😂 I guess the simple answer is that supply is greater than demand. I.e., more sellers - whales powering down, and writers wanting to cash out to fiat for their work. This is still greater than the number of people who want to hold steem power. Price will keep falling until these balance! I'm pretty sure there is such a point, and it won't drop to 0! Anyway, if it drops really low I might consider doubling my stake or something like that😃

When I would I buy if I had any sense is when price has stopped falling (I.e., stable) for a long while i.e. weeks! I think this will happen eventually! Here's the chart I'd be watching:
https://coinmarketcap.com/currencies/steem/#charts
And, from the shape of that graph, I would not be surprised if it fell to 50 cents! 😱
As i say though, I'd be looking for a 'flat' line before buying again!!