Having a single thumb drive with multiple ISOs on it means you don't have to keep juggling thumb drives ("now where did I put my Debian 12 XFCE installer") or overwriting them over and over ("oh no, this has the 64-bit ISO, but now I need the 32-bit installer").
Having a single thumb drive with multiple ISOs on it means you don't have to keep juggling thumb drives ("now where did I put my Debian 12 XFCE installer") or overwriting them over and over ("oh no, this has the 64-bit ISO, but now I need the 32-bit installer").