It's just rubber , with some air in it.
- A child balloon
you inflate it, play with it for a while, then it explodes, you throw it away you inflate another one, maybe even a different color. the kid plays with it .. till it breaks, then you throw it away...
- An inflatable castle.
you inflate it, play with it for a while, deflate it, move it around, inflate it again, if it has a hole in it, you patch the hole.
- The tyres on your kids bike,.
You inflate it , kid rides on it, if it starts losing air, you fix it asap so you can continue using it.
All of the 3 are really valuable use cases for rubber with air in it,
in a way they are all equally valuable, but serve different purposes, different use cases.
Now think about this next time you spin up a container, that's running a database, application server and where your users ssh to.
It's not just another VirtualMachine