In the first instance, I don't patronize steemit just because of the rewards gotten from posts, I patronize it because it's a platform that gives one the opportunity to learn new things and be exposed beyond the four walls of ones consciousness and immediate environment.
As we all know, the world has become a global village and steemit is just one of those platforms that makes the world get smaller on daily basis with different content posted by users from all over the world and access a lot of intellectual contents that's boosts residual knowledge, steemit has been able to carve a niche for itself in the social media atmosphere.
In view of this fact, I won't stop using steemit even if stops rewarding posts with SBD or STEEM but the only thing that can happen would be that I would be more of a reader than a poster because the post rewards acts like a motivation and catalyst for creative contents and when that's not there, the morale would definitely go low but notwithstanding I'd visit the platform daily just to add to my body of knowledge by reading contents posted by other users.