The way I look at it:
Right now during the lowest prices is the best time to be posting, as the amount of STEEM per dollar ratio is so high.
If the price of STEEM was $1 right now, I would only be getting 5 STEEM for a $5 post, so say the value goes up to $5 per STEEM, that means that those 5 STEEM are now worth $25.

But!

If my post makes $5 while the price of STEEM is $0.10, the end payout would be 50 STEEM...now let's just say that the value of STEEM went up to $5 again like in the first example, that would mean that those 50 STEEM that you made from your $5 would now be worth...

Please standby, mathing in progress

$250!!!

Final thought: Just keep steeming, just keep steeming, just keep steeming.