Oh I can replace I tire, but I have to be somewhere with a tire to replace. The spare was in the trunk, but hadn't been mounted from the month before when we had replaced the tires. Should have done it right away, I admit. Still I had a blowout (and I don't mean a flat, I mean the tire wall exploded) and so I need to be towed over 30 miles to a place that could mount my tire. They did that for free. As the original poster never goes much more than 15 miles, I assume he's in his home town, and it probably wouldn't be that useful for him.
I'll admit, I'm being a wussypants for caving to fear, but it's not unfounded fear, I travel cross country in old cars from time to time, and shit has happened regularly enough that I come out ahead with the service. Where I've really improved is locking myself out of the car. Since there isn't much of value in it, I've just stopped locking it. Ours is not really a vehicle most people would look to steal.