I like alignments. Its usually a starting off point whenever I create a new character: "Today I'm in the mood for a holier-than-thou Evil Smiter" and I build the persona around that. I dont know how true this is really, but it feels like alot of the time people just want to play a "wizard version" of themselves or a "fighter version" of themselves so then alignments become too rigid and narrow because our real selves are too nuanced to fit in a 3x3 Good or Evil matrix.