Chaotic Neutral. No obligations, no risk of getting too wrapped up in your alignment that you become ignorant. As neutral, you get to survey all options equally and without bias so that you can best defend and inform yourself. Plus, if you play right, you can do your thing without being targeted by villains or heroes. Win-win, yo.
Although I do admit that a lot of noobs use this alignment as an excuse to troll or be general dumbasses, but I call them Stupid Neutrals who are trying to hard to be unpredictable. Pshaw, to them I say.