Most people don't even have a donut at this point and they sure as hell don't know how to change their tire even if they do.

I have a donut, plug kit, quart of oil, and jump kit in my car at all times, but that's mostly because I'm traumatized from having very shitty cars in the past. I'd still rather be safe than sorry since it's such a massive pain in the ass to get a dead battery or flat tire.