I Write What I See

Use of 'None' Genre

This 'None' is known as a negative genre.
Why?
Every genre has a meaning. So, we use the genres to the theme or purpose of my writing. When all possibilities end, there is no shine of hope, in that case, we use 'None'. So it's a negative genre.
But we often see, a few authors use it wrongly. There was a sad experience which the poet described to us. Our lives are a mixture of both happy and sad experiences. So, a sad incident never stops us. So, 'Experience', 'Relationship', 'Personal' and many other genre options(according to situations) are available here. Then why should we use the genre 'None'?