[@Thinslayer]

To me, Roleplaying is like a team game. As you say, you shouldn't have to feel that it's a chore to write something good. However I think it's better to think of it this way: 

A nice fleshy post helps others think about what they can write in return. The more you express, the more things people can use to write their response. Which is similar to when Xeno said. There's a fine balance between writing too little and writing too much. There have been cases where some roleplayers just write too much and it becomes a chore to [i]read[/i]. 

I personally find it comforting when someone gives me character expressions and internal dialogue to read so I can learn more about their character.

Writing about their internal dialogues and expressions is important in this case as unlike many roleplays, we don't know each other's characters at all. There's no bio or little personality snippet to refer to. 

Just something to keep in mind. We're a team. We're all here to help each other out if one of us is feeling lost.