I think sometimes it is just a matter of timing whether you get a lot of responses or not. Of course it is up to you whether to post or not. I think we all have different styles here and if everyone had the same style, that would not be a good thing

Photos that tend to get a lot of responses tend to be ones that either need direction or are way over the top good. Nice photos that don't need a lot of critique tend to not get a ton of attention as there is not much to say to "help"