The answer is simple Jona: Human nature. People love to practice a given right simple because they can, regardless of whether it is necessary or not.
In this case, they go for minusing your post simply because they can even if you haven't even written anything offensive or bogus. I have stopped thinking so hard about it. As you can see in this very post, you received shitload of minuses again although there was no reason at all. I mean you only inquired a bothering issue.