Posts do not show the name of author

I can’t see the name of the author on a single post. Is it a bug?
If it is a missing feature – it should be fixed, if the theme is to be used for News (which usually has different authors for every post). If it is just a personal blog – that it is not needed.

I suggest to show the name of the author in every post, and allow toggling (in customize theme options for single posts) to hide/show.

Please advise