On attaining it (supreme love) man becomes perfect, immortal and (fully) satisfied.

The practice of Bhakti and the attainment of moksha are not restricted by any considerations of caste, creed, colour, sex, or country. Every human being who has faith, devotion and aspiration can cultivate Bhakti and attain God-realisation through Bhakti.

The devotee becomes perfect through God-realisation. His object is attained. All his desires are gratified by God-realisation. He never feels the want of anything. He enjoys supreme peace, eternal and perfect satisfaction and everlasting bliss and so he becomes a Siddha.

For a devotee, Siddhis or powers are worthless. He does not care for them. These are nothing when compared to Divine Love. His mind is filled with divine ecstasy. He has  

realised the Whole.  

He has realised the essence and totality of all. He has attained the source and fountain of all. And so he is perfect, immortal and thoroughly satisfied. He cannot be attracted towards external objects, which are incomplete, imperfect, defective and are only parts.

He who has attained God-realisation becomes immortal. He ever lives in the presence of God. He has his being in God. He has no more desires and so he will not take any more body or birth.

Satisfaction here referred to is not the kind of satisfaction which one gets when some desire is fulfilled. It is absolute satisfaction that comes from the absence of all desires and the attainment of God-realisation. Only when one attains the highest perfection can one be perfectly satisfied in his own Self. Only then can one be content with oneself. There is no other gain superior to that absolute satisfaction attained through God-realisation.

~ Narada Bhakti Sutras, 4th sutra. Commentary by Swami Shivananda Saraswati.