There are a lot of other people who had a downvote and now they are earning well.
You get few $ because you have just a few likes in your posts.
If you just write "it's my sexy friend" in a lost post what people think about all the new posts is: another picture of a model that a guy with a lot of spare time has updloaded getting it from her instagram account -> nothing that deserves being voted.
We are going to assume for a moment you are the girl of the first pics and the photographer you are saying you are: art, beauty, interesting experiences about the making off of the pictures, interesting way of life, more kind of photos... you are a mine of gold because that mixed of
characteristics always work being managed properly.
And regarding about if stupid or not the comment, this is the more clever comment in your post that you have received, and you are going to receive in the future.