To allow future generations to ask this question again, eventually free to disregard their parents and grand-grand-[...]parents previous answers.

Human sexuality is a biological urge. Love is a spiritual quality. Neither requires the other. It is like the difference between faith and knowledge, while one can be rather uninformed they can have great faith, or they can have great knowledge and little faith, and all combinations in between.

To feed gossip and to allow cheap and easy productions of TV programs with 'interesting' news.

Race? Nature. Seriously, think about majoring in philosophy.