In order to LOVE u have to BE.
The fulfillment of basic physical needs is nothing but u becoming to existence!
Then u can love. Love is not an instinct, it is more deeper characteristic of life. U love because u r alive. even when u hate, it is just love standing upside down, often temporarily.
Instincts are more superficial, it is in the interest of ur well being of the physical existence. Territorial instinct, herd instinct etc!
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Love by no means is human's most desired instinct should be love.More than this, the other cryin needs are food,sheler & socil security without which humans existence will be nowhere.After getting these problems fulfilled , human beings can think of love whether it's
paternal, sisterly, conjugal love.People burdened with the above-noted dire-problems