A doormat man is a passive male whose only life purpose is to be walked on, used, and ignored by those around him. He will never do anything of note. Doormat men are likely marry a girl boss trophy wife, have three children, work in a boring no-name office, and live at the end of a cul-de-sac. When they die, they will be forgotten about, but that is okay because they hold the fundamental roles that society needs to function.
"I don't want to be a doormat man, I want to be a pirate!"
"We don't need any more pirates, Martin, we need more doormat men."