I generally play good.
I have a problem with morality in a lot of modern games, they generally make it a choice between being a good guy or the type of guy who would stamp on a sack of kittens for a laugh. There isn't much in the way of doing things that are evil in a proper megalomaniac kind of way, they only have options for being evil in a ruthless 'bit of a dick' sort of way.
Basically throwing it into D&D alignment terms - there are plenty of chaotic evil choices but very few lawful evil ones.