Steerage always has more fun than the poofters on the upper deck.
Classy top-hatted oldsters cheerfully display noblesse oblige and go out in style, cradling a snifter of brandy. Peripheral characters like Jack's cronies are introduced early on for the sole purpose of being pathetically snuffed at the end. I suppose that on a symbolic level we were intended to discern that doing so somehow enabled her to free herself from the confines of the material world and join her boyfriend up in the special wing of heaven reserved for Titanic drownees. But it still kinda pisses me off.