I was reluctant to buy a car that did not have a spare. That was about 3 cars ago, and I have never had a flat yet. I think the key is to get rid of tires "way before" they are bald. Its the 80/20 rule: 80 perecent of tire failures are in the LAST 20 percent of the tires life. So, I dont drive tires in the last 20 percent of their life, I replace them early.
The reason Im ok with it, as I reasoned, that, because my wife cant change a tire, if she gets a flat, she calls Toyota Road Service and gets help. This said "I dont want to change a tire either, especially in a dangerous place along side a highway."
Frankly most people dont even know how to change a tire any more. They get the jack, jack the car up, "THEN" try to losen tough lug nuts, often knocking the car off the jack. Its pretty easy to do. Of course, you make sure all the lug nuts are broken loose "before" you jack the car up. Then jack up the car, and take the tire off, without "jerking" it off the jack on top of you.
Since, I figured, "even with a spare and a jack" my wife would be the one to get a flat, so I just do, what I told her to do. Get your cell, call Toyota Roadside Assistance, and tell them you have no spare, and no jack.
I used to work on my own cars, but my knees are bad, and I dont really want to get on my knees and change tires, even tho I have done dozens over the years.
When I was 16, I took my mother on a "date". My car was a 55 chevy that I paid $50 for. The only tires I could afford were ones that were thrown away. So, I figured if I had about 3 spares, it would not matter if I had even 2 flats.
Well, I drove my mother about 3 miles..sure enough a flat. It's ok, Mom. I got this. I got out, changed the tire, it took about 10 minutes, and back on the road, to flat number 2, about 1/2 mile later. No problem, mom, you know the drill. Back on the road, and, sure enough, flat number 3. Well, I dont have a spare anymore, but we should be able to make it home. Nope. Flat number 4 and no spare. So, I called from the neighbors and my Dad brought another spare probably off another car. We made it home that time.
Lesson: No matter how many spares you have, it may not be enough if you have trash tires.
You probably dont have a spare alternator, a spare starter, a spare fan belt, or spare radiator hoses, either. Yes, its good to plan ahead, but I plan ahead by ensuring my car is in tip top shape before I leave. I dont worry about the spare any more, and its never been a problem. I have probably driven "at least" 100,000 miles without a spare and without a problem. Once a tire was leaking (slow leak, not a blow out) and I simply drove it to Walmart, and replaced the tire. If you do have a blowout, there is a good chance that the spare wont fix all the problems anyway. You can simply keep going with a slow leak.