I have a number of Windows computers around my home. Some are media centers, others handle my outdoor cameras and smart home, and some are just for basic office work. I’m also the person in my circle of friends and family who gets the call when there is a technology problem. Basically, this means I’m working on other people’s PCs pretty frequently. I don’t particularly enjoy having to install the same group of apps on every machine I’m working on, especially when the PC isn’t mine. Having portable apps on my thumb drive means I don’t have to.