I'll tell you why sometimes, cos often they need the money
my father teaches in a certain post secondary institution, and he
tells me, every time some boy gets some girl pregnant, he knows the
army has a new regular prospect liao ...
or those chaps from poly will know ... the lure of a new crotch
rocket or a bunch of pocket money can override people sometimes,
though there are some that really needed the money at home
...
some of course, a very very few of them, actually signed on for the
love of country ... patriotism if you may ... such a dirty word
nowadays, unfortunately ...