It is very normal to have multiple operating systems installed on a PC. If you need to use Linux and Windows for your work purposes or any other purposes, the obvious option you have is dual-booting ...
Testing different operating systems is something I do a lot of (mostly for work), and while I enjoy it, it can definitely be a hassle to constantly have to switch operating systems. It's already a lot ...
Raspberry Pi and other SBCs can boot an operating system from SD cards and USB devices. I own multiple SD cards and am a fan of swapping them to instantly switch to a different OS, such as RetroPie, ...