Why so?
For me personally, the choice not to have a rooster is based on the simple fact I don't wish to have one. I have had roosters at multiple times and am not at all bothered by crowing or mating and have no concern regarding proper rooster management (bad behavior, by the way, is not a result of "not getting enough attention", in fact many of the best roosters get very little "attention" and many common behavior issues can actually stem from too much well intentioned interaction). The cockerels that have come to me in recent years as the result of missexing have not been kept because I have no need of a rooster....I have no desire to feed a nonproducing birds, I do not believe in the need of a rooster for flock guidance or protection because o know from experience that hen only flicks do just fine in both departments, and I have no need for fertilized eggs. I choose to keep a hen only flock because that is my current preference, based on exactly none of the points you "know for a fact" are the reasons people dont choose to keep roosters.
Ask any number of people here who choose not to keep roosters and you will likely find even more reasons that are not on your list of "known facts".
I can purchase day old chicks, shipped, from my NPIP breeder I use, for less than it costs me to maintain a rooster for a year. That's feed, bedding, wormer. mitacide, pen maintenance, float test, etc.
