Is there a valid reason to carry the extra weight of spare tire? Will roadside assistance show up with tire mounted to wheel and then change it? There is no way I could change it myself.
I don't carry a spare! And, if I had one it would be too much for me to handle. It would be a back injury in the making. I would safely pull off the road and either order a pizza or have the DW start some food for a picnic!