When it comes to writing do you think more is less or the opposite that less is more? Which makes you think more?

As an example: I love writing poetry, especially following specific styles and forms. Even created (I think) some new forms. I find Haiku, Tonka (Tanka), etc most intriguing from a brevity standpoint. However, I can’t seem to find a consensus about the length of these forms… is more better or is less better? hmmmm and I wonder about this concept of ‘more or less’ in most aspects of life… including life itself.