I agree, you have a valid point and I am new to steemit and I was thinking about the same this morning. If someone is spending 10 hours to write a post and if that user ends up receiving more votes after first 7 days, he just feel unlucky.

To me not rewarding posts after 7 day makes people post low quality content on the network. If steemit is looking for high quality content they must fix this.

Thanks,
@stealthtrader