Myself and my circle of friends within around my age (+/- 8 years) don't really care too much about luxury cars, it's more about value like Jason said, as well as the perceived needs when you purchase.
I can't ever see myself ever buying a Lincoln (or MB, Caddilac or any of the rest) because I can get a fully loaded or reasonably equipped Fusion or Edge for as much as or in some cases cheaper than their base model luxury brand equivalent. It's just not wort spending the extra $$$$ for the badge on the grille and the perceived status symbol.
That said, if you are someone like BORG who does enjoy all of the bells and whistles on top of the status symbol, then by all means go ahead, I just don't get it and neither do any of the people I know personally.