bharath, according to your examples, it seams that you consider behavior and action (take up smoking or drugs) are people attitudes, doesn't you? I do agree with you about this.
My example of people in and out of office also refer to people behavior.
In office, people have to behave formally, but outside they have not.
I do not agree that people's attitudes is innate because if so, people attitutes seem to determined by their ADN codes or gene. And we will have nothing to do with the issue.
I think you should look up the dictionary in order to understand the meanings of attitude and innate.
I hope you will come up with more ideas