15 hours and not a single reply?! People tend to forget about the amount of work the Utopian mods have to do. They are not there to judge you or your work, to 'take away' the massive vote some think they are 'entitled' to. These people can make a difference to your project. They give feedback from a very specific direction. They motivate you by acknowledging your work and guiding you in better directions where possible. Sometimes specific to Utopian but very often in a broader sense to help you perfect your skills which benefits you outside of Utopian as well.

Personally I always try to be grateful and give an upvote as token of my appreciation, even if I don't agree.

And I agree to @didic, feedback can be hard to take. And that goes both directions. Sometimes the feedback (moderation) itself should not be the endpoint and some feedback on the moderation is welcome to guide moderation.

If you're not in it 'only for the money' but care about the project feedback from Utopian is very valuable, nurture it.