Why do guys on FB keep their relationship status empty?

even if they are single or in a relationship they chose to leave their relationship status blank. why is that?

i knew a guy who used to have his relationship status as single then he had a girlfriend so he decided to change it to engaged. he then broke up with his girlfriend and decided to set his status to private (blank). (he dated her for 3 months by der way if that helps lol)

also one of his friends decided to tease him about having a short engagement that he didn't reply to nor did he delete the comment.

i don't like this guy so don't say just ask him if he is single lol I just wanted to use him as an example of a guy who chooses to keep his status private from public view.
Why do guys on FB keep their relationship status empty?
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