I think it goes way deeper than most realize. I believe that one's purpose in any species is to procreate. So a large women not only protects a fetus in pregnancy, but also in life a bigger larger mother can be a much better protector to offspring than a smaller. Subconsciously a smaller man my feels this is a greater advantage toward his offspring. It is not any conscious decision. It is built into your instincts. Does anyone agree??