Let me say something that is clear and needs no argument around it. Look throughout your window and start watching people. What would be the common thing among all of them? If you trace back all their behaviors, you will find all of that being motivated by one single thing which is “LOVE”. As such you might appreciate how important love is in an individual’s life. Love of prospect, fame, money, family, emotional warmth (the conventional constrained definition of love)…etc. Having said that, you will find that different people perceive the word differently. There is also the dark side of love in which some people have the tendency to hurt others and being satisfied with that, thus the love of destruction (hint: see the world around you). Anyway, Life and Love don’t just share the “L” and “e” but they are really difficult to tease apart, if you don’t have love then you are dead despite you are breathing.
That was the answer to the second part of your question in which the answer to the first is encapsulated within. I tried here to be away from discussing the matter in relation to religion or between different sexes as the question was general.
But tell me, is it an assignment given to you at school?