One of the downsides of this, other than the risk of actually running out of gas (which - knock wood - I've only done once, and that was over 20 years ago, and it happened in the parking lot of a gas station, so leave me alone) is that I never catch good gas prices. I'll notice that gas is cheap, but I'll still have a half-full tank so don't bother to stop, and then when I'm on empty gas prices will have gone back up again.
This week, I bucked the trend. Gas prices had been around $2.65, and then they dropped to $2.59. I drove past the gas station for a week thinking I should get gas while the prices were down, and then finally decided to fill up on the way to work one morning, even though I still had a little under a quarter tan left.
And then when I drove past the gas station on the way home from work, prices had dropped to $2.53.
I was really bummed until I realized that my tank only holds about ten gallons of gas, which means there was really less than a dollar difference. But still.