"The inhabitants of Satya-yuga and other ages eagerly desire to take birth in this age of Kali, since in this age there will be many devotees of the Supreme Lord Nārāyaṇa. These devotees will appear in various places but will be especially numerous in South India." - Sage Narada foretelling the appearance of the Alwars {Srimad Bhagavatham 11.5.38-40}