Why people become bad?

There are several reasons why people go bad:

 1. Environmental Impact

 2. Cultural effects 

 3. Poor education

 4. Inferiority complex

 5. Compare with others 

 6. Drug and alcohol use

 7. Can't think well 

 8. Trauma

 9. Selfishness

 10. So lofty / overly high expectation 

 11. No God in heart