What kinda question is that? Seems pretty judgemental to me.
Some people are “the computer guy” for a BUNCH of people, and if your usual pocket arrangement allows them there are a bunch of tools you can use for different jobs.
It’s just a different kind of pocketknife at the end of the day. I don’t interact with nearly enough people to need one, but I can definitely see the possibilities.
This seems like a question that 90s people would ask. “What are you doing with your life that necessitates carrying a globally-connected supercomputer in your pocket?”
In different use cases I can see plenty of times where a bootable USB drive can mean you can use your own computer from any other machine. Which is super cool. It’s gonna be a much slower version of it, obviously(because of USB read/write, but pretty cool that you can carry a full copy of your system, settings, documents, and programs than can sync to/from your regular backups. Or another with copies of other boot level tools to have on hand. If you help a bunch of people with covering from microshit to Linux, then keeping a LiveISO on hand for them to try out and install seems like a good idea to keep around.
There’s just so many reasons why you would ask this. Personally I don’t, but if I did I would like to think I could ask the question.
If nothing else, it’s interesting to think about for sure. Now I kinda wanna imagine what kind of stuff is even possible to run like this that would be useful to me.
I only own one such at all, and I’ve only used it a very few times. Once to install my own OS, once to install a different one I leave at my brother’s house because his laptop is having issues and I go over there to watch movies with him, and once to install that same one (Mint in those cases, Pop for mine) on my parent’s computer.
If I find a good enough use case, I would start carrying at least one. But for now I just rewrite this one for whatever things I need at the time.