Some people, by any reasons, end up believing that love is just a trick of the brain and body chemistries to make you continue to procriate and survive as a species.
Some others think that it is everything, the whole reason to be alive for.

I guess, as in everything else, it is you who gives whatever meaning to it, what you focus on, the perception that you're inclined to because of all the circumstances you've been through.

(and then there are the ones who are also poets and love the idea of true and pure love and for that reason they keep the platonic love above everything on this Earth.)