I don't know about desi parents but white dudes can't be expecting their sons and daughters to support them in old age so thats why they have to work. Post retirement can be great fun if you join sports clubs etc or involve yourself in some hobby or creative work.
I saw a video on youtube about an old lady (she was in her 80's) she joined salsa dancing classes after her husband's death and man SHE WAS AMAZING!! She performed live with her grandson as her partner and everyone went mad!
Life is only boring when you want it to be.