From the female perspective, I have always preferred older men to younger or those my same age. Although I wondered about this particular penchant of mine for awhile, I recently came across an article that stated the optimum age difference between a man and a woman is 15 years (the man being the older partner). The study was based on what women find attractive in men (maturity, security, fidelity, etc.) and what men find attractive in women (physical appearance, energy level, etc.). I don't know if there was any genuine scientific basis to it, but the article pointed to that age split having the lowest percentage of divorces per couple. Who knows?