After learning that soup is sterilized in the canning process and doesn't actually need to be reheated, I pretty much always just eat it straight from the can. It saves dishes and microwave time, and makes it extremely easy to just grab and go if I need something for the road.
But, somewhat understandably, I haven't met anyone else who does this.
Cooking is one of my favorite things on the planet, so absolutely not. I regularly spend all day cooking in anticipation of sitting down to a delicious bowl of soup for dinner. Takes all kinds though, so do you and enjoy your cold soup in a can!
I have a mug that's twice the volume of a condensed soup can. I'll put an arbitrary amount of water in the electric kettle, dump the contents of one can into the mug and then fill the rest with the boiling water. Result is soup at the perfect temperature for consumption. Makes me feel better than having instant ramen when I'm lazy imo.
No. I make bone broth and freeze it in portions. I use that to make soup of left over meat, veg, beans with vermicelli. You can put that in a thermos for the road.