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The above said, the Buddha did not encourage people to be careless or heedless. This is because the Buddha understood there is violence in nature and people who possess violent tendencies.

For example, the Buddha said by wandering around late at night or by allowing oneself to be intoxicated, one leaves oneself unprotected:

(a) "There are, young householder, these six dangers in indulging in intoxicants which cause infatuation and heedlessness:

(i) loss of wealth,
(ii) increase of quarrels,
(iii) susceptibility to disease,
(iv) earning an evil reputation,
(v) shameless exposure of body,
(vi) weakening of intellect.

(b) "There are, young householder, these six dangers in sauntering in streets at unseemly hours:

(i) he himself is unprotected and unguarded,
(ii) his wife and children are unprotected and unguarded,
(iii) his property is unprotected and unguarded,
(iv) he is suspected of evil deeds,
(v) he is subject to false rumours,
(vi) he meets with many troubles.

Sigalovada Sutta