that's exactly the point @sabrin514, what's the point of having all those followers if none of them have any interest in you or your posts beyond hoping you vote for them. And that's why it's a double-win when you actually comment something worthwhile on someone's post. Because it's already validating a certain degree of "mutual shared interest" on a particular subject or topic.
And what better way to grow a vibrant community. than upon a solid foundation of like-minded individuals such as that?! :)