Why George Gascon, photographer of LKY, going home?

It was reported that the Gascon, personal photographer of LKY from the
ST, had returned to the Philippines to be a farmer despite LKY
persuading him to stay on as a citizen. Why would a person reject the
good offer from LKY to stay in this first world city?
 
Let’s do the number game and see why this guy preferred to go back and
be a farmer, owning his own farm and probably a big land and