If a devotee is chanting that means he is busy. He is not free. He is calling the Lord.
chanting together dissolves all differences
Association with devotees gives us the intelligence to tame the wandering mind.
Remembrance is the fruit of sravana and kirtana
By Performing Kirtana we will achive the eligibility to enter the sankirtana lila of Caitanya Mahaprabhu.
Attainment of Vaikuntha is only possible only if Shiksha and Diksha are performed by a bonafide sampradaya.