Not necessarily that people are showing off in that case, it could might be their own way of celebration.
Or it could also be because people are focusing more towards maintaining a good position in the society and having a raised standard of living. I agree with Rao Sir, there is no answer to this.
Do what inspires you !!
In the case of elderly people also these formalities are there. Actually, what importance is there for a birth day. Perhaps if possible eating with parents on that day will be the best one can do. Parents will be highly pleased by such an action.
Gold Member ISC