[Number 3]

The fun part about this is you can change your oil as often as you want to. If you believe having better oil in your engine most of the time, go for it.

All everyone is trying to say is that it isn't 3,000 miles any more. Look at most oil change intervals in the owners manuals of some very high end cars and you'll see 10,000 miles. GM (and maybe others) actually have an algorithm that calculates the interval based on several key and important factors. Even GM's calculation isn't the same for all uses. It will calculate a different interval for around town vs. highway. And even I couldn't let myself go the 12,000 miles that calculation showed on Mrs. Number 3's Malibu and Cruze due to all extended highway miles.

So the only wrong answer here is "I never change my oil" or "I get to it every couple of years or so".