Interesting topic thanks P.
It's an interesting phenomenon how we 'celebrate' death, or morn those lost, especially across different cultures.
In regard to all the 'cost' associated to public morning, I think to the Egyptians and how they burried their Pharohs, or perhaps the most ultimately outlandish burial of Mumtaz Mahal.
Nice building the Taj, but in todays money would have cost trillions to built.
I think that particular death was 'celebrated' a little too much.
But, different situation perhaps.
Whatever the case, we do strange things when people die. It reminds us of our own mortality and we react according to our culture. If that means slapping your head crazily and wearing black for 3 days, or sitting around telling stories and getting pissed, or waving candles in the air, well, it's all a bit weird really.