This Is Why Buttons On Men’s And Women’s Shirts Are On Different Sides. Another theory involves weaponry. Men carried their swords on their right hand, so it was easier for them to unbutton with their left hand. Pages:Previous page 1234567Next page See more Previous article 10 Creepy Things Guys Should STOP Saying To Women… #6 Is The Worst. Next article 10 Vagina Facts You Need To Know, Especially If You Don’t Have One.