I work at a hotel, my boss wants us to say those kinds of things to be friendly with the guests so they come back. I don't say it all the time and I can usually tell when someone is in a bad mood so I don't ask them. Honestly it just sort of comes out as a whole greeting like "hey, how are you today" because I say it so much. It's not even really that I'm super interested all the time I just try to give good customer service lol. I get asked all the time, too, I usually just say doing fine or tired if I'm not feeling like talking too much.
Mr. Eko 2/14/2012 - My first GSD and my little Romeo
Xena 11/30/12 - My first APBT and my little warrior princess