Perhaps Because:
A) The phone rings
B) You are dumb enough to answer
C) It's the crew schedule person
D) They say " Pack your bags! You are going to India."
E) Even your best whining, snivelling and begging doesn't work.
F) You are too old to quit and too young to retire
G) That lotto ticket fails again.
H) Have fun in India!
Happens from time to time even to the best people for a tour or three.