I am on 50/50 post rewards, as well. I am also slowly building a savings balance in HBD. And I reckon I'll keep doing that for as long as I feel inclined/have time to actively post.
The thing that concerns me in a curation only scenario is that you (meaning "any random person") can earn more from holding HBD than from staking Hive for curation rewards. So where's the incentive to buy Hive? And if that incentive is lessened... where's the counter-pressure on the BUY side of the market to offset those who are always selling every cent they earn here?