The world follows ‘Just Do It’ slogan. Thus today there is ‘high living and no thinking.’
Only the most intelligent people are entitled to engage in the process of chanting the mahamantra.
We cannot realize the presence of Krishna while chanting the holy names, only because our chanting is not at the level of ‘shuddha nama’ i.e. offense less chanting.
Only a pure devotee, whom we deem to be a vaishnava, can be considered sinless.