Replying to comments on pictures

I have posted a lot of picture on thiss ite since i had joined, thinking it would be a great way to get people to le tme know what they thought of my shots and whatever, it seems to me all anyone ever does is bitch and complain about a picture, wether jealusy or something else kicks in, I have no idea. Why the hell cant people just say something about the picture, wether it be nice or bad. But not every picture on this site is shit, and it seems that the comment most pictures get.