Yes, it’s true about men and how frequently they think about sex. When I was younger I had asked a boyfriend how often he thought about sex. His answer shocked me. Like you, I would not want to have their ‘anatomy’ and constantly distracting thoughts.
Since the purpose of life is to create more life - Be fruitful and become many and fill the earth. Men are just doing what we were made to do. I don't understand what women think about all of the time if not to become mothers and fulfill their roles.