Period of reproduction

Among other animals, Humans are abnormal in that they think about sexual reproduction every day of the year, and not just during a few weeks, say in spring. The latter, normal, behaviour would be so much more advantageous... the risk of sexual aggression and violence would be limited to two weeks in May (during which vulnerable individuals could just go to a secure place), and we would get reproductional holidays. Since for the rest of the year sex would be as interesting as Xmas in August, we would get so much less spam, and have so much more time for thinking about other things.