Love is a social construct. It exists to distract us from the absurdity of life, from the pain and suffering that we truly live through each day. It is a curtain over our eyes that covers up the truth, that life is miserable.
Why not be happy? Why not spend your life looking for your other half? If life is absurd anyway, why not act irrationally and continue to seek out love? The question of if love exists or is just a social construct is meaningless. We still feel the same longing for love either way. We still feel attraction and heartbreak. So why not look for love?