Male/female marriage is better, more logical

These differences seems obvious to most of us. A large study involving over 10,000 people in 2012 (The Distance Between Mars and Venus: Measuring Global Sex Differences in Personality, Del Giudice, Booth, Irwing) confirm what we all know anyway, with the largest differences between the sexes being in sensitivity, warmth, and apprehension (higher in females), and emotional stability, dominance, rule-consciousness, and vigilance (higher in males).
So, having both men and women together brings complementarity and balance. It’s taken a long time for the political system, for instance, to recognise the imbalance caused by the absence of women in politics.