Hmmm.. i think it some are just trying to show off their
wealth... And some not rich also wanna show off.. Thats the funny
part..
well, i wouldnt say all are arrogant as its sort of
over-generalisation... 
but i do come across alot of such peop.. So, noa choice but to bear
with it..
As long as u know u did the right thing, just don care them.. life
is short, thus must be happy 