Because the air is fresher up there, there's what. There is also an
advantage for those short standing ministers. When things so wrong,
they can hide behind the tall standing ones. 
u dun laugh, i see that old Uncle, Mah Bow Tan short short but very
clever, also got pretty Ang mo wife but old liao...tall tall then
him,..so clever. Sg uncles here go for PRC gals, our Ministers go
for Ang Mo gals...wow!