I have used my donut once or twice over the last 20 years. I would use it only to drive at a limited speed to a place to get a new tire.
If your tires are good, properly inflated, etc, the risk of a blow out type failure is pretty low. If you run over a nail, the tire can be patched / plugged.
Some may suggest a full size spare (front tire wheel) in the trunk but I believe that is a bit of overkill, and with a limited amount of space there, is not terribly practical.
My other car, a Volt, doesn’t even have a spare. It has a tire pump and a can of fix a flat, and tire pressure monitors.