The human body is rarely achieved and although temporary like other bodies, it is meaningful because in human life one can perform devotional service. Even a slight amount of sincere devotional service can give one complete perfection.
It is the duty of all parents to make their child Krishna conscious so that the fortunate child may not have to take birth in the material world again.
If your consciousness is absorbed in Krishna, you are always a sanyasi. – In his letter to Jayananda, September 29, 1967.