Are We Laughing Enough?

Yesterday I was talking to my mother on phone and suddenly she asked where your smile have gone? she said, "You are not laughing enough these days, at least while taking over the phone".

When I gave a sincere though about it, I felt that the number of times we laugh in a day has been drastically reduced.

When we had no money in college, we used to laugh.
When we used to travel in general class, we used to laugh.
While sharing a single samosa and coke we used to laugh.
We used to laugh even we got less marks in exams.
Even the girl friend who ditched could not stop us to laugh.

But now money is there, we travel in planes or in AC compartments, getting free coke in offices, need not to prepare for any exams but still the smile from our faces have reduced not if gone.