Adhering to "tradition" matters even when it comes to vices
Traditional vices are OK - cigarettes, alcohol,cannabis (after all it has a place in Hindu tradition)
Non-Traditional vices are not OK (E-cigs) (even if they are less harmful)
That has its plusse
After all as Burke said - the Individual is foolish, the species is wise
E.g.
Most moms will chastise their kids if they have too much potato chips. Or chocolates
The rebukes will be less for traditional "samskaari" indulgences like Samosas, Rasagullas
Even if these are no less harmful