I was looking at the quest ratings on the database and noticed that the top rated quests have a whopping 3 hearts, most are lower, and many people don't even bother to rate at all.

Seems to me that all the time spent making these quests is pretty much being wasted since there are none considered better then "fair" according to the player responses.

Where is the incentive to continue bothering with building them since it seems they sure aren't being appreciated much?

Maybe this is why so few of the oldtimers don't even bother to release quests any more.